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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended July 3, 2004

OR

Commission file number 0-19299

Integrated Circuit Systems, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (610) 630-5300

Securities registered pursuant to Section 12(b) of the Act:

None

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, $.01 par value

(Title of class)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is an accelerated filer (as defined in the Exchange Act Rule 12b-2). Yes x No ¨

On September 14, 2004, the aggregate market value of the registrant’s Common Stock held by non-affiliates of the registrant was approximately $1,676,000,000.00.

As of September 14, 2004, there were 72,772,982 shares of Common Stock, $0.01 par value, outstanding.

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DOCUMENTS INCORPORATED BY REFERENCE

Certain statements contained in the Company’s Definitive Proxy Statement for the 2004 Annual Meeting of Shareholders (the “Definitive Proxy Statement”) are incorporated by reference into Part III of this Form 10-K.

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PART I

General

Integrated Circuit Systems, Inc. was incorporated in Pennsylvania in 1976, and began by designing and marketing custom application specific integrated circuits (“ASICs”) for various industrial customers. In particular, we were noted for our unique expertise in designing ASICs, which combined both analog and digital, or “mixed-signal”, technology. By 1988, we had adopted a strategy of developing proprietary integrated circuits (“ICs”) to capitalize on our complex mixed-signal design technology and pioneered the market for frequency timing generators or silicon timing devices which provide the timing signals or “clocks” necessary to synchronize high performance electronic systems. Clocks replaced the multiple crystal oscillators and other peripheral circuitry previously used to generate and synchronize timing signals, thus providing savings in board space, power consumption and cost. Our clock products were initially used in video graphics applications in personal computers (“PCs”), but subsequently expanded to include motherboards, PC peripheral devices such as disk drives, audio cards, laser printers and other digital consumer electronics such as digital set-top boxes and games consoles. We further extended into communications, which needs high performance clocking solutions supporting networking, telecommunication, workstation and server applications. Additionally, we now offer surface acoustic wave (“SAW”) technology to develop high performance products for telecommunications and wireless infrastructure markets.

Our “first” initial public offering of common stock occurred in June 1991, at which time our common stock commenced trading on the Nasdaq National Market under the symbol ICST.

On May 11, 1999, we merged with ICS Merger Corp., a transitory merger company formed and wholly owned by the affiliates of Bain Capital, LLC and Bear, Stearns and Company Inc. We refer to this event as the recapitalization. We issued $100.0 million in aggregate principal amount of senior subordinated notes and entered into a $95.0 million senior credit facility in connection with the recapitalization. Our common stock was no longer traded on the Nasdaq National Market. We no longer filed periodic reports with the Securities and Exchange Commission until we filed the registration statement filed in connection with the exchange offer for the senior subordinated notes in October 1999.

On May 22, 2000, we completed our “second” initial public offering of 12.5 million shares of our common stock. We used the net proceeds of this initial offering to repay our bank debt, close our tender offer for subordinated notes, and pay the fees and expenses associated with the offering.

On May 31, 2001, a secondary offering took place, in which certain shareholders of the Company sold 11.3 million shares of our common stock to the public. We did not receive any of the proceeds from the sale of the shares in this secondary offering.

On January 4, 2002 we acquired Micro Networks Corporation (“MNC”) for $74.9 million, net of cash acquired. MNC is a supplier of a broad range of precision electronic devices and modules for optical networking wireless and broadband infrastructure, high-end network servers and defense electronic markets. We believe that by acquiring MNC we now have access to technology that will enhance the performance of our silicon timing products in order to strengthen our position within existing strategic markets such as servers and storage systems. The purchase price included $5.6 million in purchase accounting liabilities and write-down of certain fixed assets related to our preliminary plan to restructure the activities of MNC. MNC received a $2.5 million income tax refund during fiscal year 2003 and as a

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result goodwill was adjusted. Goodwill was reduced $1.2 million in fiscal 2004 as a result of the reversal of a portion of the restructuring reserve. The results of MNC have been included in the consolidated financial statements since the acquisition date.

Products and Product Applications

We supply a broad line of timing products for use in PC motherboard and peripheral applications. These silicon timing devices control multiple processes by providing and synchronizing the timing of the computer system, including signals from the video screen, graphics controller, memory, keyboard, microprocessor, disk drives and communication ports.

We also design, develop and market silicon timing devices for other applications such as games consoles, digital set-top boxes, digital cameras, laser printers, flat panel displays and digital TVs. Crystal oscillators have traditionally served the timing requirements of these products. Crystal oscillators are predominately quartz-based crystals that resonate at a single set frequency. In situations where a single clock can replace multiple crystal oscillators, clocks have emerged as both more cost-effective and technologically superior solutions than the crystal-based standard. We view the $3 billion crystal-based oscillator market as a future growth opportunity, as our clock products provide viable alternatives to the present crystal-based standard. Several application segments are leading the conversion from crystal oscillators to silicon timing devices, including, telecom and networking equipment and mass storage systems.

A significant growth area for clocks is communications. As the Internet usage expands, there is a need for increased bandwidth and infrastructure. These increased requirements are driving demands for silicon timing devices.

We also sell leading edge mixed-signal (analog and digital) integrated circuits customized to the specific requirements of a broad range of customers and applications. Custom mixed-signal products are used in medical, consumer and industrial applications.

MNCs’ main frequency source product line includes fixed-frequency and voltage-controlled oscillators, phase-locked loops, synthesizers and clock distribution modules. Our SAW-based product offerings are narrow and wideband bandpass and band reject filters, switched filter banks and unity gain modules. SAW technology is also used for several oscillator-based products.

Sales and Marketing

We market our products through a direct sales force that manages a worldwide network of independent sales representatives, international stocking representatives and distributors. We direct our sales efforts through offices in Norristown, PA, San Jose, CA, Worcester, MA, Taipei, Taiwan, Tokyo, Japan, Seoul, Korea and throughout Europe. We currently have more than 1,200 OEM end customers. Maxtek Technology Co. Ltd., Lacewood Corporation, the latter formerly known as Maxtech Corporation Limited, and Magic Island International, overseas stocking representatives in China and Taiwan, China and Hong Kong, and Korea respectively, who are commonly controlled, accounted for 23%, 13%, and 3% of our fiscal year 2004 revenue, respectively. These international stocking representatives sell to approximately 86 OEM end customers.

Foreign sales are directly conducted by sales representatives and international stocking representatives located in the Pacific Rim and Europe, and managed by direct sales staff in the Europe, Taiwan, Korea and Japan sales offices. Foreign sales are denominated in U.S. dollars and are subject to risks common to export activities, including governmental regulation and trade barriers.

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Our backlog includes customer-released orders with firm schedules for shipment within the next twelve months. Generally, these orders may not be canceled without 45 days advance notice. Customer relationships are generally not subject to long-term contracts. Product delivery schedules are frequently revised to reflect changes in customer needs. For these reasons, our backlog at any particular date is not representative of actual sales or any succeeding period, and we believe that our backlog is not a meaningful indicator of future events.

Our revenues are subject to fluctuations primarily as a result of competitive pressures on selling prices, changes in the mix of products sold, the timing and success of new product introductions and the scheduling of orders by customers.

We generally warrant that our products will be free from defects in workmanship and materials for a one-year period. If the warranty terms are met, defective products returned to us are replaced after a confirming evaluation by our quality control staff. We have not experienced significant warranty claims to date.

Manufacturing

We qualify and utilize third party suppliers for the manufacture of silicon wafers. Most of our wafers currently are manufactured by outside suppliers, two of which supply the substantial majority of our wafers. The manufactured wafers are packaged primarily at three assemblers. We typically agree upon production schedules with our suppliers based on order backlog and demand forecasts for the approaching three-month period.

In addition we have production facilities in Worcester, MA and Auburn, NY. Worcester is our SAW wafer fabrication facility with sub-micron capabilities. Our Auburn facility houses the personnel for testing and assembly for the majority of our military and defense products. Low volume assembly is performed in-house while high volume is subcontracted out to offshore manufacturers.

We have our own test and drop-ship facility in Singapore’s Kolam Ayer Industrial Park to achieve faster delivery of our products to customers throughout the world. The Singapore facility handles wafer probe and final testing for various integrated circuits used in personal computers, data storage devices and other peripheral applications.

We believe that adequate capacity will be available to support our manufacturing requirements. Our reliance, however, on multiple, offshore, outside subcontractors involves several risks, including capacity constraints or delays in timely delivery and reduced control over delivery schedules, quality assurance and costs. We are continuously seeking to obtain additional sources of supply and capacity for more advanced process technologies, although there can be no assurance that such additional sources and capacity can be obtained. The occurrence of any supply or other problems resulting from these risks could have a material adverse effect on our operating results.

Research and Development

The design process for our products is extremely complex and iterative, involving the development of a prototype through computer-aided design, the use of simulation methodology, the generation of photo masks for the manufacturing process, the fabrication of wafers and the characterization of the prototype on test systems before submission to customers for qualification. Research and development efforts concentrate on the design and development of new leading-edge products for our markets and the continual enhancement of our design capabilities.

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During fiscal year 2004, we developed and introduced to market 846 new products. For over twenty years, we have developed libraries of proprietary mixed-signal integrated circuit designs and have invested in extensive computer-aided design and engineering resources specifically designed to support the increasing complexity and customized nature of silicon timing devices. Our company’s SAW capabilities include a library of proprietary device design algorithms utilized by our engineers. Investments in research and development were approximately $40.4 million, $35.0 million and $29.2 million in fiscal years 2004, 2003 and 2002, respectively. Such expenses typically include costs for engineering personnel, prototype and wafer mask costs, and investment in design tools and support overhead related to new and existing product development. As of July 3, 2004, our research and development staff comprised 141 people. We will continue to invest in research and new product development and invest in new technologies to support our current and future customers.

On August 4, 2004 we announced that we had signed an agreement to purchase technology and the capability to develop a family of high performance mixed signal products for the high definition and digital video/imaging market. In the first quarter of fiscal year 2005 we completed the purchase and paid $24.5 million for the purchase of intellectual property and a team of proven engineers.

Patents, Licenses and Trademarks

We hold several patents, as well as copyrights, proprietary mask sets, and trademarks with respect to our various products and expect to continue to file applications in the future as a means of protecting our technology and market position. Most of our earlier patents carry a 20-year life and begin expiring in fiscal year 2010. In addition, we seek to protect our proprietary information and know-how through the use of trade secrets, confidentiality agreements and other security measures. To augment product feature sets or accelerate development schedules, we license certain technologies. No single license, however, is believed to be material to our business. In certain instances, we have performed design services pursuant to an agreement by which we transferred certain of our intellectual property rights in the final product to our customers. Such transfers are also not deemed material to our business. There can be no assurance, however, that these measures and/or others will be adequate to safeguard our interests or preserve our competitive position or protect us from allegations regarding potential patent infringement.

In connection with the purchase of MNC, we acquired $36.3 million of intangible assets based on an independent appraisal. Of this amount, $2.9 million was assigned to research and development assets that were written off at the date of acquisition. The remaining $33.4 million of intangible assets include a customer base valued at $12.0 million (6 year weighted-average useful life); a trade name valued at $3.0 million (ten year weighted-average useful life) and developed technology valued at $18.4 million (indefinite useful life).

As is typical in the semiconductor industry, we have, from time to time, been notified that we may be infringing certain patents and other intellectual property rights of others. Such matters are evaluated and reviewed with counsel. There can be no assurance that litigation will not be commenced in the future regarding any claim of infringement of any intellectual property right, or that, if required, any licenses or other rights could be obtained on acceptable terms.

Competition

In general, the semiconductor and PC component industries are intensely competitive and characterized by rapid technological changes, price erosion, cyclical shortages of materials and

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variations in manufacturing yields and efficiencies. Our ability to compete in this dynamic and opportunistic environment depends on factors both within and outside our control, including new product introduction, product quality, product performance and price, cost-effective manufacturing, general economic conditions, the performance of competition and the growth and evolution of the industry in general. There are several substantial entities in the industry who are much larger than us and who could, and do, exert significant influence in determining the pace and key trends in the development of PCs and PC components. Moreover, some of our current and potential competitors have significantly greater financial, technical, manufacturing and marketing resources. Competitors also include privately owned and emerging companies attempting to secure a share of the market for our products.

Forward-Looking Statements

This report contains forward-looking statements, including, without limitation, statements concerning the conditions in the semiconductor and semiconductor capital equipment industries, our operations, economic performance and financial condition, including in particular statements relating to our business and growth strategy and product development efforts. The words “believe,” “expect,” “anticipate,” “intend” and other similar expressions generally identify forward-looking statements. For such statements we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. The reader is cautioned not to place undue reliance on these forward-looking statements, which speak only as of their dates. These forward-looking statements, are based largely on our current expectations and are subject to a number of risks and uncertainties, including, without limitation, those identified under the “Factors That May Affect Future Results” section and elsewhere in this report and other risks and uncertainties indicated from time to time in our other filings with the Securities and Exchange Commission (“SEC”). Actual results could differ materially from these forward-looking statements. In addition, important factors to consider in evaluating such forward-looking statements include changes in external market factors, changes in our business or growth strategy or an inability to execute our strategy due to changes in our industry or the economy generally, the emergence of new or growing competitors and various other competitive factors. In light of these risks and uncertainties, there can be no assurance that the matters referred to in the forward-looking statements contained in this report will in fact occur.

We do not undertake to update our forward-looking statements or factors that may affect future results to reflect future events or circumstances.

Our website address is www.icst.com. Within the “Investors” section of our website, you can access, free of charge, our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to these reports filed with or furnished to the SEC, in accordance with Section 13(a) or 15(d) of the Securities Exchange Act of 1934. In addition, the SEC maintains a website, www.sec.gov, which contains reports, proxy and information statements, and other information regarding issuers filing electronically, including our company.

Factors That May Affect Future Results

You should carefully consider the following factors in addition to the other information set forth in this 10-K in analyzing an investment in our Company. The risks and uncertainties described below are not the only ones facing us. Additional risks and uncertainties that we do not presently know about or that we currently believe are immaterial may also inadvertently impact our business operations. If any of the following risks actually occur, our business, financial condition or results of operations will likely suffer. In such case, the trading price of our common stock could fall, and you may lose all or part of the money you paid to buy our common stock. This 10-K contains forward-looking statements that involve risks and

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uncertainties. Actual results could differ materially from those discussed herein. Factors that could cause or contribute to such differences include, but are not limited to, those identified below, as well as those discussed elsewhere in this 10-K.

Our future operating results are likely to fluctuate and therefore may fail to meet expectations, which would cause our stock price to decline.

Our operating results have varied widely in the past and are likely to do so in the future. In addition, our operating results may not follow any past trends. Our future operating results will depend on many factors and might fail to meet our expectations for a number of reasons. Any failure to meet expectations could cause our stock price to significantly fluctuate or decline.

Factors that could cause our operating results to fluctuate that relate to our internal operations include:

Factors that could cause our operating results to fluctuate that depend on our suppliers and customers include:

Downturns in the business cycle could reduce our revenues and the profitability of our business.

The semiconductor industry is highly cyclical and is characterized by constant and rapid technological change, rapid product obsolescence and price erosion, evolving standards, short product life cycles and wide fluctuations in product supply and demand. This industry has experienced significant downturns, which have been characterized by diminished product demand, production overcapacity, high inventory levels, accelerated erosion of average prices and industry-wide fluctuations in the demand for semiconductors, which have resulted in under-utilization of design capacity. Any future downturns could have a material adverse effect on our business and operating results. Furthermore, any upturn in the semiconductor industry could result in increased demand for, and possible shortages of, components we use to manufacture and assemble our ICs. Such shortages could have a material adverse effect on our business and operating results.

The markets for our products depend on continued demand for PCs, communications equipment and consumer electronics. There can be no assurance that these end-user markets will not experience changes in demand that will adversely affect our business.

Our inability to introduce new products based on the latest technology could adversely affect our business.

Our future success is highly dependent upon our ability to continually develop new products using the latest and most cost-effective technologies, introduce our products in commercial quantities to the marketplace ahead of the competition and have our products selected for inclusion in products of leading systems manufacturers’ products. We cannot assure you that we will be able to regularly develop and introduce such new products on a timely basis or that our products, including recently introduced products, will be selected by systems manufacturers for incorporation into their products. Our failure to design and develop such new products, to have our products available in commercial quantities ahead of competitive products or to have our products selected for inclusion in products of

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systems manufacturers would have a material adverse effect on our results of operations and financial condition.

We cannot assure you that we will be able to regularly develop and introduce products that will be selected by communications applications manufacturers for incorporation into their products.

Our business is very competitive and increased competition could adversely affect us.

The semiconductor and PC component industries are intensely competitive. Our ability to compete depends heavily upon elements outside our control, such as general economic conditions affecting the semiconductor and PC industries and the introduction of new products and technologies by competitors. Many of our competitors and potential competitors have significant financial, technical, manufacturing and marketing resources. These competitors include major multinational corporations possessing worldwide wafer fabrication and integrated circuit production facilities and diverse, established product lines. Competitors also include emerging companies attempting to obtain a share of the existing market for our current and proposed products. We also compete with alternative timing solutions, such as crystal oscillators. To the extent that PCs, communications equipment and consumer electronics OEMs choose to install crystal oscillators as timing devices in their products, demand for our products may decline. To the extent that our products achieve market acceptance, competitors typically seek to offer competitive products or embark on pricing strategies, which, if successful, could have a material adverse effect on our results of operation and financial condition.

We depend on the PC Industry and our business could be adversely affected by a decline in the PC market.

A substantial portion of the sales of our products depends largely on sales of PCs and peripherals for PCs. The PC industry is subject to price competition, rapid technological change, evolving standards, short product life cycles and continuous erosion of average selling prices. Should the PC market decline or experience slower growth, then a decline in the order rate for our products could occur. A downturn in the PC market could also affect the financial health of some of our customers, which could affect our ability to collect outstanding accounts receivable from such customers.

Our inability to obtain wafers and assemblers could seriously affect our operations.

We currently depend upon third-party suppliers for the manufacture of the silicon wafers from which our finished ICs are manufactured and for the packaging of finished ICs from silicon wafers. We cannot assure you that we will be able to obtain adequate quantities of processed silicon wafers within a reasonable period of time or at commercially reasonable rates. In the past, the semiconductor industry has experienced disruptions from time to time in the supply of processed silicon wafers due to quality or yield problems or capacity limitations. Two outside foundries manufacture virtually all of our wafers. If one or more of these foundries is unable or unwilling to produce adequate supplies of processed wafers on a timely basis, it could cause significant delays and expense in locating a new foundry and redesigning circuits to be compatible with the new manufacturer’s processes and, consequently, could have a material adverse effect on our results of operations and financial condition. We also rely upon third parties for the assembly of our finished integrated circuits from processed silicon wafers. We currently rely on three assemblers, two of which produce most of our finished integrated circuits. While we believe that there is typically a greater availability of assemblers than silicon wafer foundries, we could nonetheless incur significant delays and expense if one or more of the assemblers upon which we currently rely are unable or unwilling to assemble finished integrated circuits from silicon wafers.

If we lose any customers, our sales could decline.

Our 10 largest OEM end customers accounted for approximately 42% of our total revenue in fiscal year 2004. Maxtek Technology Co. Ltd., Lacewood Corporation, the latter formerly known as Maxtech Corporation Limited, and Magic Island International, overseas stocking representatives in China and

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Taiwan, China and Hong Kong, and Korea respectively, who are commonly controlled, accounted for 23%, 13%, and 3% of our fiscal year 2004 revenue, respectively. These international stocking representatives sell to approximately 86 OEM end customers. Because we are dependent upon continued revenue from OEM end customers, any material delay, cancellation or reduction of orders from these or other major customers could cause our sales to decline significantly. There is no guarantee that we will be able to retain any of our customers. In addition, our customers may materially reduce the amount of product ordered from us at any time. This could cause a significant decline in our net sales and we may not be able to reduce the accompanying expenses at the same time.

If we fail to accurately forecast demand for our products, we may have large amounts of unsold products or we may not be able to fill all orders.

We provision semiconductors based primarily on our internal forecasts, and secondarily on existing orders, which may be cancelled under many circumstances. Consequently, we depend on our forecasts to determine inventory levels for our products. Because our markets are volatile and subject to rapid technological and price changes, our forecasts may be wrong, and we may make too many or too few of certain products. Also, our customers frequently place orders requesting product delivery almost immediately after the order is made, which makes forecasting customer demand even more difficult. The above factors also make it difficult to forecast quarterly operating results. If we are unable to predict accurately the appropriate amount of product required to meet customer demand, our business, financial condition and results of operations could be seriously harmed.

Our business could be adversely affected by changes in political and economic conditions abroad.

For the fiscal years 2004, 2003, and 2002, we generated approximately 76.1%, 75.6% and 78.6% of our revenue, respectively, from international markets. These sales were generated primarily from customers in the Pacific Rim region and included sales to foreign corporations, as well as to foreign subsidiaries of U.S. corporations. Certain of our international sales are to customers in the Pacific Rim region, who in turn sell some of their products to North America, Europe and other non-Asian markets. In addition, two of our wafer suppliers and all of our assemblers are located in the Pacific Rim region. There can be no assurance that the effect of an economic crisis on our suppliers will not impact our wafer supply or assembly operations, or that the effect on our customers in that region will not adversely affect both the demand for our products and the collectibility of our receivables. Our international business activities in general are subject to a variety of potential risks resulting from certain political, economic and other uncertainties including, without limitation, political risks relating to a substantial number of our customers being in Taiwan. Certain aspects of our operations are subject to governmental regulations in the countries in which we do business, including those relating to currency conversion and repatriation, taxation of our earnings and earnings of our personnel, and our use of local employees and suppliers. Our operations are also subject to the risk of changes in laws and policies in the various jurisdictions in which we do business, which may impose restrictions on us. We cannot determine to what extent our future operations and earnings may be affected by new laws, new regulations, changes in or new interpretations of existing laws or regulations or other consequences of doing business outside the U.S. Our activities outside the U.S. are subject to additional risks associated with fluctuating currency values and exchange rates, hard currency shortages and controls on currency exchange, even though business is denominated in U.S. dollars. Additionally, worldwide semiconductor pricing is influenced by currency fluctuations and the devaluation of foreign currencies could have a significant impact on the prices of our products if our competitors offer products at significantly lower prices in an effort to maximize cash flows to finance short-term, dollar denominated obligations; such devaluation could also impact the competitive position of our customers in Taiwan and elsewhere, which could impact our sales. Currently, we do not engage in currency hedging activities as all transactions are denominated in U.S. dollars.

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We may make acquisitions, which could subject us to a number of operational risks.

In order to grow our business and maintain our competitive position, we may acquire other businesses in the future. We cannot predict whether or when any acquisitions will occur. Acquisitions commonly involve certain risks, and we cannot assure you that any acquired business will be successfully integrated into our operations or will perform as we expect. Any future acquisitions could involve certain other risks, including the assumption of additional liabilities, potentially dilutive issuances of equity securities and diversion of management’s attention from other business concerns. Furthermore, we may issue equity securities or incur debt to pay for any future acquisitions. If we issue equity securities, your percentage of ownership of our company would be reduced. If we issue debt securities, our financial condition may be strained by the requirement to pay interest and other debt-related costs. In addition, our operations may be restricted by the covenants associated with these debt securities. We may also enter into joint venture transactions. Joint ventures have the added risk that the other joint venture partners may have economic, business or legal interests or objectives that are inconsistent with our interests and objectives. We may also have to fulfill our joint venture partners’ economic or other obligations if they fail to do so.

Our inability to secure and protect our intellectual property, and/or the effort of third parties to enforce their own intellectual property rights against us, has in the past resulted and may in the future result in costly and time-consuming litigation.

We hold several patents as well as copyrights, mask works and trademarks with respect to various products and expect to continue to file applications in the future as a means of protecting our technology and market position. In addition, we seek to protect our proprietary information and know-how through the use of trade secrets, confidentiality agreements and other similar security measures. With respect to patents, there can be no assurance that any applications for patent protection will be granted, or, if granted, will offer meaningful protection. Additionally, there can be no assurance that competitors will not develop, patent or gain access to similar know-how and technology, or reverse engineer our products, or that any confidentiality agreements upon which we rely to protect our trade secrets and other proprietary information will be adequate to protect our proprietary technology. The occurrence of any such events could have a material adverse effect on our results of operations and financial condition.

Patents covering a variety of semiconductor designs and processes are held by various companies. We have from time to time received, and may in the future receive, communications from third parties claiming that we might be infringing certain of such parties’ patents and/or other intellectual property rights. Any infringement claim or other litigation against or by us could have a material adverse effect on our results of operations and financial condition.

Virtually all of our key engineers worked at other companies or at universities and research institutions before joining us. Disputes may arise as to whether technology developed by such engineers was first discovered when they were employed by or associated with other institutions in a manner that would give third parties rights to such technology superior to our rights, if any. Disputes of this nature may arise in the future, and there can be no assurance that we will prevail in these disputes. To the extent that consultants, vendors or other third parties apply technological information independently developed by them or by others to our proposed products, disputes may also arise as to the proprietary rights to such information, which may not be resolved in our favor.

Loss of certain key members of our management or inability to attract and retain skilled personnel could negatively impact our business prospects.

We are dependent upon our ability to attract and retain highly skilled technical and managerial personnel. We do not maintain “key man” life insurance on our Chief Executive Officer, Mr. Hock E.

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Tan, or any of our other technical or managerial personnel. We believe that our future success in developing marketable products and achieving a competitive position will depend in large part upon whether we can attract and retain skilled personnel. Competition for such personnel is intense, and there can be no assurance that we will be successful in attracting and retaining the personnel we require to successfully develop new and enhanced products and to continue to grow and operate profitably. Furthermore, retention of technical and engineering personnel in our industry typically requires us to present competitive compensation packages, including stock option grants.

Some of our products may be subject to product liability claims.

Certain of our custom ICs products are sold into medical markets for applications, such as hearing aids. Although we believe that exposure to third-party claims has been minimized, there can be no assurance that we will not be subject to third-party claims in these or other applications or that any indemnification or insurance available to us will be adequate to protect us from liability. A product liability claim, product recall or other claim, as well as any claims for uninsured liabilities or in excess of insured liabilities, could have a material adverse effect on our results of operations and financial condition.

Provisions of our charter documents and Pennsylvania law could discourage potential acquisition proposals and could delay, deter or prevent a change in control.

Provisions of our articles of incorporation and by-laws may inhibit changes in control of our company not approved by our board of directors and would limit the circumstances in which a premium may be paid for the common stock in proposed transactions, or a proxy contest for control of the board may be initiated. These provisions provide for:

Subchapter F of Chapter 25 of the Pennsylvania Business Corporation Law of 1988 prohibits certain transactions with a 20% shareholder, an “ interested shareholder,” for a period of five years after the date any shareholder becomes an interested shareholder unless the interested shareholder’s acquisition of 20% or more of the common stock is approved by our board of directors. This provision may discourage potential acquisition proposals and limit the circumstances in which a premium may be paid for our company.

The stock prices of technology companies such as ours are highly volatile and could drop unexpectedly.

The public markets have experienced volatility that has particularly affected the market prices of securities of many technology companies for reasons that have often been unrelated to operating results. During the course of the preceding twelve months ended July 3, 2004 the market price of our common stock traded within a range of $22.80 to $36.68 per share. This volatility may adversely affect the market price of our common stock and our visibility and credibility in the markets.

Employees

As of July 3, 2004, we had 546 full-time employees, 141 of whom were engaged in research and development, 41 in sales, 28 in marketing and technical support, 47 in finance and administration and

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289 in manufacturing support and operations. We have incentive programs to reward and retain our personnel, especially our key research and development staff.

Our corporate headquarters, covering approximately 61,000 square feet, is located in Norristown, Pennsylvania. The lease will expire in February 2007 with monthly rent of approximately $59,000 in fiscal year 2004 and progressively increasing each year to approximately $63,000 in the final year of the lease term. We also have a renewal option of three years after the initial term.

We opened an approximate 10,000 square foot design facility in Tempe, Arizona in January 2000. The lease term for this facility is five years with monthly rent beginning at approximately $9,300 for the first year and progressively increasing each year to approximately $10,100 in the fifth year.

We utilize a facility located in Singapore for testing, warehousing, sales and administration, which consists of approximately 24,000 square feet of space leased pursuant to an agreement, which have various expiration dates through September 2006. The rent for this facility is approximately $23,000 per month.

Our San Jose operations consist of approximately 70,000 square feet of office space pursuant to a lease agreement, which will expire in December 2008. We believe that this facility is adequate to meet our requirements going forward. Monthly rent began at $100,100 per month, increasing annually to approximately $130,608 per month in 2008.

Our Worcester, Massachusetts’ facility consists of approximately 86,200 square feet of space leased pursuant to an agreement, which expires in December 2010 with monthly rent of approximately $40,400 progressively increasing each year to approximately $48,000 in the tenth year, with an option to renew for two more terms of 5 years.

Our Bloomfield, Connecticut facility consisted of approximately 16,400 square feet of space leased pursuant to an agreement, which was terminated in July 2003. The rent was approximately $6,700 per month.

Our Auburn, New York facility, which is primarily our defense production location, consists of approximately 21,533 square feet. This property was purchased in March of 1998.

From time to time, various inquiries, potential claims and charges and litigation are made, asserted or commenced by or against us, principally arising from or related to contractual relations and possible patent infringement. We believe that any of these claims currently pending, individually and in the aggregate, will not have any material adverse effect on our consolidated financial position or results of operations, although no assurance can be made in this regard.

None.

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PART II

Our common stock is traded in the over-the-counter market on the Nasdaq National Market System under the symbol ICST. Below are the quarterly high and low sale prices of our common stock for the fiscal years ended July 3, 2004 and June 28, 2003.

We have not in the past, and do not expect for the foreseeable future to pay dividends on our common stock. Instead, we anticipate that all of our earnings in the foreseeable future will be used for working capital and other general corporate purposes. Our existing revolving credit loan agreement restricts our ability to pay dividends to the holders of our common stock. Any future determination to pay dividends will be at the discretion of our board of directors and will depend upon, among other factors, our results of operations, financial condition, capital requirements and contractual restrictions.

As of July 3, 2004, we had 70.2 million shares outstanding which are held by 56 holders of record and approximately 5,250 beneficial holders.

Issuer Purchases of Equity Securities

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Five-Year Summary

(In thousands, except for per share data)

SEE ACCOMPANYING NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

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We design, develop and market silicon timing devices that emit timing signals used to sequence and synchronize electronic operations to ensure that information is interpreted at the right time and speed. Our silicon timing devices are used in computing systems, such as PCs, workstations, disk drives and printers, as well as in a wide range of digital consumer products, such as digital set-top boxes, HDTVs, games consoles, digital audio and imaging products and video game consoles. Increasingly, our silicon timing devices are also being used in products within the communications infrastructure industry, including Internet backbone, access and networking equipment, such as optical switches, routers, cable and DSL modems, servers and storage area networks. All digital devices require a timing signal and those with any degree of complexity require silicon timing devices to time and synchronize their various operations. Additionally, we now offer surface acoustic wave (“SAW”) technology to develop high performance products for optical networking and wireless infrastructure markets.

Prices for our products are predominantly a function of their position in the product life cycle, design complexity, competitive environment, the price of alternative solutions such as crystal oscillators and overall market demand. We recognize revenue upon transfer of title, and substantially all of our sales are made on the basis of purchase orders rather than long-term agreements.

Significant Transactions

Acquisition of Micro Networks Corporation

On January 4, 2002 we acquired Micro Networks Corporation (“MNC”) for $74.9 million, net of cash. We believe that by acquiring MNC we now have access to technology that will enhance the performance of our silicon timing products in order to strengthen our position within existing strategic markets such as servers and storage systems. The purchase price included $5.6 million in purchase accounting liabilities and write-down of certain fixed assets related to our preliminary plan to restructure the activities of the acquired entity. MNC received a $2.5 million income tax refund during fiscal year 2003 and as a result goodwill was adjusted. Goodwill was reduced $1.2 million in fiscal 2004 as a result of the reversal of a portion of the restructuring reserve. The results of MNC have been included in the consolidated financial statements since the acquisition date.

Subsequent Event

On August 4, 2004 we announced that we had signed an agreement to purchase technology and the capability to develop a family of high performance mixed signal products for the high definition and digital video/imaging market. In the first quarter of fiscal year 2005 we completed the purchase and paid $24.5 million for the purchase of intellectual property and a team of proven engineers.

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Annual Results of Operations

The following table sets forth statement of operations line items as a percentage of total revenue for the periods indicated and should be read in conjunction with the Consolidated Financial Statements and Notes thereto.

(Expressed as a percentage of total revenue)

Fiscal Year 2004, as Compared to Fiscal Year 2003

Revenue. Total revenue for fiscal year ended July 3, 2004 increased by $30.4 million to $272.1 million as compared to the previous year. The increases in sales occurred over all of our end markets. Communications was the fastest growing revenues driven by ramp-ups in the ADSL, server, server memory and networking markets. Of the $30.4 million increase in revenues, communications was $23.8 million. Combined, all other revenue only grew 4% as the average selling price declined 7.8% while volume increased 22.1%.

The following is a summary of revenue percentages by end market:

Foreign revenue, which includes shipments of integrated circuits to foreign companies as well as offshore subsidiaries of US multinational companies, was 76.1% of total revenue for fiscal year 2004 as compared to 75.6% of total revenue in the prior year. Certain of our international sales were to customers in the Pacific Rim, which in turn sold some of their products to North America, Europe and other non-Asian markets.

Gross Margin. Gross margin represents net revenue less cost of sales. Cost of sales includes the cost of purchasing the finished silicon wafers manufactured by independent foundries, costs associated with assembly, packaging, test, quality assurance, product yields and the cost of personnel and equipment associated with manufacturing support. Cost of sales increased $11.1 million to $108.8 million for fiscal year 2004, as compared to the prior year period due to increased sales. Gross margin as a percentage of total revenue was 60.0% for fiscal year 2004 as compared to 59.6% in the prior year. The overall increase in gross margin as a percentage of revenue is due to increased sales of higher margin products, such as ADSL, server and server memory. We anticipate that gross margin will continue to fluctuate as a percentage of revenue because of anticipated fluctuations in product mix, manufacturing costs and competitive pricing.

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Research and Development Expense. Research and development (“R&D”) expense increased $5.3 million to $40.4 million for fiscal year 2004 as compared to the prior year. As a percentage of revenue, research and development increased to 14.8% as compared to 14.5% in fiscal year 2003. During fiscal year 2004, we spent $3.6 million more on R&D projects and $1.7 million on hiring additional personnel and overhead expenses.

R&D costs consist primarily of the salaries and related expenses of engineering employees engaged in research, design and development activities, costs related to design tools, supplies and services and facilities expenses. The level of research and development expenditures as a percentage of net revenues will vary from period to period, depending, in part, on the level of net revenues and, in part, on our success in recruiting the technical personnel needed for our new product introductions and process development. We continuously attempt to control expense levels in all areas including research and development. However, we continue to make substantial investments in research and development to enhance our product offerings, which in turn are critical to our future growth.

Selling, General and Administrative. Selling, general and administrative expenses (“SG&A”), decreased $0.8 million to $35.9 million for fiscal year 2004 as compared to the prior year period. As a percentage of total revenue, selling, general, administrative and other expenses decreased to 13.2% of revenue as compared to 15.2% in the prior year period. SG&A expenses consist mainly of salaries and related expenses, sales commissions, and professional and legal fees.

Selling expense increased $2.3 million in fiscal 2004 as compared to the prior year. This is a result of increased sales commission to outside sales representatives as a result of higher revenue. As a percentage of total revenue, sales expense decreased slightly to 8.9% in fiscal 2004 from 9.1% in fiscal 2003.

General and administrative expense declined $2.0 million in fiscal 2004 as compared to fiscal 2003. The decrease is attributable to a reduction of legal fees in fiscal 2004.

Included in SG&A is the amortization of deferred compensation for options issued in fiscal 2002 below fair market value. The amortization of deferred compensation relating to stock options was $0.7 million in fiscal 2004 as compared to $0.5 million in fiscal 2003. Fiscal year 2003 includes a $1.3 million accelerated payout for the buyout of executive stock options. Refer to footnote 14 for additional details.

Amortization of Intangibles. Amortization of intangible assets acquired in connection with the acquisition of MNC was $2.3 million for fiscal year 2004 and for fiscal year 2003.

Operating Income. Operating income increased $14.7 million to $84.8 million in fiscal year 2004 compared to $70.1 million in the prior year period. Expressed as a percentage of revenue, operating income was 31.2% and 29.0% in fiscal year 2004 and fiscal year 2003, respectively.

Interest and Other Income. Interest and other income was $2.5 million for fiscal year ended July 3, 2004 and $3.0 million in the prior year period. Included in other income in fiscal 2004 is the gain of $0.3 million as a result of the sale of 25% of our initial investment in Maxtek Technology. Included in other income for fiscal 2003 is the gain of $0.6 million as a result of the sale of 50% of our initial investment in Maxtek Technology. The decrease in interest income is attributable to declining interest rates.

Interest Expense. Interest expense was $0.3 million in fiscal year 2004 and $1.5 million in fiscal year 2003. The decrease in expense is due to the elimination of our debt in the second quarter of fiscal 2004.

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Income Tax Expense. Our effective tax rate was 9.8% and 14.6% for fiscal years 2004 and 2003, respectively. The decrease in our effective tax rate is the result of R&D tax credits of $4.3 million recorded in fiscal 2004. The effective tax rate for fiscal years 2004 and 2003 reflects the tax-exempt status of our Singapore operation, which has been given pioneer status, or exemption of taxes on non-passive income for five years as stated in our agreement with the Economic Development Board of Singapore. The five-year period ends December 31, 2007. We do not currently record deferred taxes on our investment in our Singapore operations, as all undistributed earnings are permanently reinvested back into the Singapore facility. If we were to record deferred taxes on our investment, the amount would be a $70.8 million liability as of July 3, 2004.

Fiscal Year 2003, as Compared to Fiscal Year 2002

Revenue. Total revenue for the fiscal year ended June 28, 2003 increased $59.1 million to $241.8 million as compared to the previous year. This represents a 32% increase in revenue year over year. The acquisition of MNC took place in January 2002. In fiscal 2003 MNC contributed a full year of revenue as compared to 6 months of revenue in fiscal 2002, an increase of $8.0 million. Gains in market share for our products into the motherboards for PCs contributed to the increase in PC revenue of 18%. In Digital Consumer and Communications, the company’s entry into new end markets, such as games consoles and DDR registered DIMM provided growth of 37% in revenues year over year. The overall average selling price declined 5% while volume increased 40%.

The following is a summary of revenue percentages by end market:

Foreign revenue, which includes shipments of integrated circuits to foreign companies, as well as offshore subsidiaries of U.S. multinational companies, was 75.6% of total revenue for fiscal year 2003 as compared to 78.6% of total revenue in the prior year. The decrease in foreign revenue as a percentage of total revenue was due to increased sales in the last time buys for some older parts which were sold domestically. Certain of our international sales were to customers in the Pacific Rim, which in turn sold some of their products to North America, Europe and other non-Asian markets.

Gross Margin. Gross margin represents net revenue less cost of sales. Cost of sales includes the cost of purchasing the finished silicon wafers manufactured by independent foundries, costs associated with assembly, packaging, test, quality assurance, product yields and the cost of personnel and equipment associated with manufacturing support. Cost of sales increased $21.4 million to $97.7 million for fiscal year 2003, as compared to the prior year period due to increased sales. Gross margin as a percentage of total revenue was 59.6% for fiscal year 2003 as compared to 58.2% in the prior year. The overall increase in gross margin as a percentage of revenue is due to product mix, including last time buys for some older high margin products. In addition prior year amounts include the non-recurring charge of $1.3 million related to the fair value adjustment to inventory that was acquired in connection with the acquisition of MNC and sold during fiscal year 2002. We anticipate that gross margin will continue to fluctuate as a percentage of revenue because of anticipated fluctuations in product mix, manufacturing costs and competitive pricing.

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Research and Development Expense. Research and development (“R&D”) expense increased $5.8 million to $35.0 million for fiscal year 2003 as compared to the prior year. As a percentage of revenue, research and development decreased to 14.5% as compared to 16.0% in fiscal year 2002.

R&D costs consist primarily of the salaries and related expenses of engineering employees engaged in research, design and development activities, costs related to design tools, supplies and services and facilities expenses. The level of research and development expenditures as a percentage of net revenues will vary from period to period, depending, in part, on the level of net revenues and, in part, on our success in recruiting the technical personnel needed for our new product introductions and process development. We continuously attempt to control expense levels in all areas including research and development. However, we continue to make substantial investments in research and development to enhance our product offerings, which in turn are critical to our future growth.

Selling, General and Administrative. Selling, general and administrative expenses increased $4.6 million to $36.7 million for fiscal year 2003, as compared to the prior year period. During the year we hired additional sales personnel and utilized more outside sales representatives, resulting in an increase in payroll and sales commission expenses. The increase in sales expense is $5.5 million for fiscal 2003 compared to fiscal 2002. G&A declined $3.6 million as a settlement of patent litigation was recorded in fiscal year 2002. Refer to footnote 18 for additional information regarding patent litigation. As a percentage of total revenue, SG&A expenses decreased to 15.2% of revenue as compared to 17.6% in the prior year period. SG&A expenses consist mainly of salaries and related expenses, sales commissions and corporate fees such as insurance and legal fees.

Included in SG&A is the amortization of deferred compensation for options issued in fiscal 2002 below fair market value. The amortization of deferred compensation relating to stock options was $0.5 million in fiscal 2003 as compared to $1.4 million in fiscal 2002. Fiscal year 2003 includes a $1.3 million accelerated payout for the buyout of executive stock options. Refer to footnote 14 for additional details.

Amortization of Intangibles. Amortization of intangible assets acquired in connection with the acquisition of MNC was $2.3 million for fiscal year 2003 and $1.0 million for fiscal 2002. The lower amortization in fiscal 2002 reflects the shorter amortization period, as the assets were acquired part way through fiscal 2002.

In Process Research and Development. In connection with the acquisition of MNC, we incurred a one-time charge of $2.9 million for the write-off of in process research and development during fiscal year 2002.

There were four significant projects identified as in process. These projects related to the development of timing modules. The primary risk related to completing these projects related to the development of new technology. As of June 30, 2003, all four projects were successfully completed. The value of the in-process research and development was determined by estimating the costs to develop the purchased in-process technology into commercially viable products, estimating the resulting net cash flows from such projects and discounting the net cash flows back to their present value. The discount rate includes a risk-adjusted discount rate to take into account the uncertainty surrounding the successful development of the purchased in-process technology.

Operating Income. Operating income increased $29.0 million to $70.1 million in fiscal year 2003 compared to $41.1 million in the prior year period. Expressed as a percentage of revenue, operating income was 29.0% and 22.5% in fiscal year 2003 and fiscal year 2002, respectively.

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Interest and Other Income. Interest and other income was $3.0 million for fiscal year ended June 28, 2003 and $3.2 million in the prior year period. Included in other income is the gain of $0.6 million as a result of the sale of 50% of our initial investment in Maxtek Technology. The decrease in interest income is attributable to declining interest rates.

Interest Expense. Interest expense was $1.5 million in fiscal year 2003 and $1.1 million in fiscal year 2002. The increase in expense is due to the $45.0 million term debt incurred in order to purchase MNC in the second half of fiscal year 2002.

Income Tax Expense. Our effective tax rate was 14.6% and 12.4% for fiscal years 2003 and 2002, respectively. The tax rate increased due to the additional domestic income generated by MNC. The effective tax rate for fiscal years 2003 and 2002 reflects the tax-exempt status of our Singapore operation, which has been given pioneer status, or exemption of taxes on non-passive income for five years as stated in our agreement with the Economic Development Board of Singapore. The five-year period ends December 31, 2007. We do not currently record deferred taxes on our investment in our Singapore operations, as all undistributed earnings are permanently reinvested back into the Singapore facility. If we were to record deferred taxes on our investment, the amount would be a $51.0 million liability as of June 28, 2003.

Liquidity and Capital Resources

At July 3, 2004, our principal sources of liquidity included cash and current investments of $195.6 million as compared to the June 28, 2003 balance of $123.0 million. The cash and investments include amounts, which have been permanently reinvested into the Singapore operations. If we were to repatriate these amounts, they would be subject to U.S. Federal Income Tax. Net cash provided by operating activities was $89.6 million in fiscal year 2004, as compared to $69.5 million in the prior year period. The increase is primarily attributable to the increase in operating income. Our days sales outstanding were 58 days in the fourth quarter of fiscal year 2004 and 47 days in the fourth quarter of fiscal year 2003. Inventory turns decreased from 5.42 times in the fourth quarter of fiscal year 2003 to 5.17 times in the fourth quarter of fiscal year 2004.

Purchases for property and equipment were $8.6 million in fiscal year 2004 as compared to $5.7 million in the prior year period. These expenditures were primarily to support our testing facility in Singapore and the fabrication capabilities in our facility in Worcester, MA acquired with MNC.

In September 2001, we announced a stock repurchase program, which authorized the purchase, from time to time, of 2.0 million shares of our common stock on the market. In October 2002, we announced that our board of directors approved to increase the number of shares to be repurchased under this repurchase program to 3.0 million. From inception of this program through July 3, 2004, we had purchased 2.5 million shares for $54.2 million.

On March 1, 2004 we entered into a revolving credit loan agreement, which will terminate March 1, 2007. The revolving credit loan agreement allows us to draw down to a maximum balance of $20.0 million in increments of not less than $500,000. At our option, the unpaid balance shall bear interest at the available LIBOR Based Rate (as defined) or the Prime Based Rate (as defined). A commitment fee on the average daily unused portion of the revolving credit loan balance will be due and payable on a quarterly basis. The commitment fee will be between .20% (.0020) and .25% (.0025) based on the funded debt to EBITDA ratio calculated the previous quarter. There was no outstanding balance on our revolving credit loan agreement as of July 3, 2004.

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In connection with the acquisition of Micro Networks Corporation (“MNC)” in fiscal year 2002, we entered into a revolving credit and term loan facility dated December 31, 2001. During the first three months of fiscal year 2004, we paid down $4.2 million of the term loan. During the second quarter of fiscal 2004, we made the final payment of $5.8 million on the term loan. This loan agreement was terminated in the third quarter of fiscal 2004. The facility enabled us to draw down $45.0 million under the term loan and $10.0 million under the revolving credit facility. At our option, the interest rate under the term loan was either (1) an annual base rate, which is the higher of (i) a rate of interest announced from time to time by the lenders’ administrative agent as the base rate (“Base Rate”) or (ii) the sum of the federal funds rate plus 0.5% per annum or (2) London Interbank Offer Rate (“LIBOR”) plus 1.75%. At our option, the interest rate under the revolving credit facility, was either (1) the Base Rate or (2) the LIBOR Rate plus a pre-formulated margin.

Our revolving credit loan agreement requires the maintenance of specified financial ratios, including a fixed charge coverage ratio, a funded debt to EBITDA ratio, a liquidity ratio, a minimum tangible net worth, and imposes financial limitations. In addition, the loan agreement restricts our ability to pay dividends to the holders of our common stock. At July 3, 2004 we were in compliance with all of these covenants.

On January 4, 2002, we acquired MNC, net of cash, for $74.9 million. We believe that by acquiring MNC we now have access to technology that will broaden our offering of silicon timing products to strengthen our position within strategic markets such as servers, storage systems and communications. In connection with the acquisition of MNC, we put in place a restructuring plan for the purpose of making MNC more efficient by combining facilities and moving some manufacturing operations offshore. The purchase price included $5.6 million in purchase accounting liabilities and write-down of fixed assets.

From the date of the acquisition until the end of fiscal 2004, one plant in Bloomfield, CT was shut down and the fixed assets associated were disposed of. Sixty-four manufacturing personnel, both line and management, were laid off. In addition we planned to move the assembly process to offshore plants.

The following tables summarizes the activity of the restructuring reserve since inception:

This reserve is included in “Accrued expense and other current liabilities” in the Balance Sheet. During fiscal year 2004, goodwill was adjusted due to the reversal of a portion of the restructuring reserve. During fiscal year 2003, goodwill was adjusted to reflect changes in estimated deferred taxes and an income tax refund of $2.5 million. The results of MNC have been included in the consolidated financial statements since the acquisition date.

In fiscal year 2001, we entered into an Investment and Stock Trade Agreement (the “Agreement”) with Maxtek Technology Co. Ltd (“Maxtek”), an international stocking representative in Taiwan and China. We invested $4.0 million and owned approximately 10% of Maxtek. The Agreement states that if

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Maxtek fails to successfully complete a public offering by December 5, 2005, we, at our sole option, have the right to demand immediate repurchase of all 4.0 million shares, at the original purchase price plus accrued annual interest (commercial rate set by the Central Bank of China) during the said period. In fiscal 2004 we sold 25% of our initial investment in Maxtek resulting in a gain of $0.3 million. In fiscal 2003 we sold 50% of our initial investment in Maxtek resulting in a gain of $0.6 million. As of July 3, 2004, we owned 1.3 million shares, or approximately, 2.5% of Maxtek. Maxtek represented approximately 23% of our sales for fiscal year 2004, 20% in fiscal year 2003 and 19% in fiscal year 2002. Additionally, sales to Lacewood Corporation, representing business into Hong Kong and China, and Magic Island International representing business in Korea, entities that are commonly controlled by the owners’ of Maxtek, were 13% and 3% of our sales in fiscal year 2004, respectively. Sales to Lacewood were 21% in fiscal year 2003 and 18% in fiscal year 2002. These international stocking representatives sell to approximately 86 OEM end customers.

We believe that the funds on hand together with funds expected to be generated from our operations as well as borrowings under our bank revolving credit facility will be sufficient to meet our anticipated cash needs for working capital and capital expenditures for at least the next twelve months. Thereafter, we may need to raise additional funds in future periods to fund our operations and potential acquisitions. We may also consider conducting future equity or debt financings if we perceive an opportunity to access the capital markets on a favorable basis, within the next twelve months or thereafter. Any such additional financing, if needed, might not be available on reasonable terms or at all. Failure to raise capital when needed could seriously harm our business and results of operations. If additional funds were raised through the issuance of equity securities or convertible debt securities, the percentage of ownership of our shareholders would be reduced. Furthermore, such equity securities or convertible debt securities might have rights, preferences or privileges senior to our common stock.

Off-Balance Sheet Arrangements

Our purchase obligations consist of purchase commitments with our manufacturers and are based on a six-month rolling forecast. The purchase commitments are utilized to ensure capacity at our various manufacturers.

Operating leases primarily consist of leased facilities that we utilize in various locations.

The following summarizes our significant contractual obligations and commitments as of July 3, 2004 (in thousands):

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Critical Accounting Policies

In response to the SEC’s Release No. 33-8040, “Cautionary Advice Regarding Disclosure About Critical Accounting Policies”, we have identified below some of the accounting principles critical to our business and results of operations. We determined the critical principles by considering accounting policies that involve the most complex or subjective decisions or assessments. We state these accounting policies in Management’s Discussion and Analysis of Financial Condition and Results of Operations and in the Notes to the consolidated financial statements contained herein. In addition, we believe our most critical accounting policies include, but are not limited to, the following:

Accounts Receivable

We maintain reserves for uncollectible accounts. Our reserve for uncollectible accounts is based on i) our specific assessment of the collectibility of all significant accounts greater than 90 days past due, ii) our historical estimate of the rate of default for all accounts less than 90 days past due and iii) any specific knowledge we have acquired that might indicate that an account is uncollectible, regardless of age. The facts and circumstances of each account may require us to use substantial judgment in assessing its collectibility.

Inventory

Inventory is stated at the lower of cost or market. Cost is determined by the first in, first out (FIFO) method. We record a reserve for obsolete and unmarketable inventory based on assumptions of future demand and market conditions. Because many of our products have multiple applications and serve volatile markets, the recent sales history of any one product is not necessarily indicative of the future demand for such product. The reserve for obsolete and unmarketable inventory is therefore based on our collective judgment regarding the realistic and potential future demand for each product and is inherently subjective. The fact that our products have a long product life cycle and low holding costs increase the subjectivity because these factors extend the time frame in which we could potentially recover the costs of each product. Silicon timing devices are analog building block products and may be used across platforms of different technologies and generations of the same technology. There is limited technology risk on inventories because markets continue to exist for older products. If actual market conditions are less favorable than those projected by management, additional inventory reserves may be required.

Goodwill and Other Intangible Assets

Goodwill represents the excess of cost over the fair value of net assets acquired from business acquisitions. Prior to July 1, 2001, our goodwill was amortized using the straight-line method over its estimated useful life of seven years. SFAS No. 142, “Goodwill and Other Intangible Assets”, addresses, how goodwill and other intangible assets should be accounted for after they have been initially recorded in the financial statements. Under SFAS 142, goodwill and other indefinite life intangible assets are no longer amortized. Beginning July 1, 2001, we ceased the amortization of goodwill. Instead, at least on an annual basis, we review the recoverability of goodwill and other indefinite life intangible assets. Furthermore, SFAS 142 requires purchases of intangible assets, other than goodwill, to be amortized over their useful lives, unless these lives are determined to be indefinite. The impairment test for intangible assets with indefinite useful lives consists of a comparison of fair value to carrying value, with any excess of carrying value over fair value being recorded as an impairment loss. We will use the two step method. We must first measure the carrying value to the fair value. To measure the fair value, many factors are considered, including historical and forecasted operating results and cash flows of the acquired businesses. After consideration of these factors, we will determine whether or not impairment exists to goodwill and other indefinite life intangibles. If impairment exists, then we will use step two and measure the amount of the impairment loss by comparing the implied fair value of the goodwill to the carrying value of the goodwill. If the carrying amount of the goodwill exceeds the implied fair value of the goodwill, the impairment loss shall be recognized in an amount equal to that excess. In addition, if an intangible asset that is not being

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amortized is subsequently determined to have a finite useful life, the asset shall be tested for impairment and that intangible asset shall then be amortized prospectively over its estimated remaining useful life and accounted for in the same manner as other intangible assets that are subject to amortization.

In connection with the purchase of MNC, we acquired $36.3 million of intangible assets based on an independent appraisal. Of this amount, $2.9 million was assigned to research and development assets that were written off at the date of acquisition. The remaining $33.4 million of intangible assets include a customer base valued at $12.0 million (six year weighted-average useful life); a trade name valued at $3.0 million (ten year weighted-average useful life) and developed technology valued at $18.4 million (indefinite useful life). The initial and continuing valuation of these assets and the assessment of their useful lives were based on subjective conclusions drawn from the characteristics of each intangible asset. We have assigned indefinite life to the developed technology because in our judgment there are no legal, regulatory, contractual, competitive, economic, or other factors to limit the useful life of this intangible asset. If we had determined that there were factors that would limit the life of this asset, we would have amortized it over the estimated useful life. The effect of this amortization might have resulted in a significant change to our financial statements based on the value of this intangible asset and dependent upon the useful life we would have assigned to this asset.

Revenues

Revenues from product sales are recognized as revenue upon shipment to the customer. Per contract, there are only two customers that have 5% right of return and price protection. These customers accounted for approximately 8% of revenues for fiscal 2004. Per shipment to these customers, we provide an allowance for the full 5% for any rights of return, as historically, the customers have utilized the full right of return. We also utilize historical data and consider market conditions to estimate an allowance for price protection. These products are semi-custom, prices are predetermined with the end customer, and accordingly, are substantially fixed at the time of sale. We recognize sales to these customers in accordance with criteria of SFAS No. 48, “Revenue Recognition When Right of Return Exists”, at the time of sale based on the following: The selling price is substantially fixed or determinable at the date of sale; the buyer is obligated to pay for the products; title of the products has transferred; the buyer has economic substance apart from us; we do not have further obligations to assist buyer in the resale of the product; and the returns can be reasonably estimated at the time of sale.

Income Taxes

Income tax expense includes U.S. federal, state and international income taxes and is computed in accordance with SFAS No. 109, “Accounting for Income Taxes”. Certain items of income and expense are not reported in income tax returns and financial statements in the same year. The income tax effects of these differences are reported as deferred income taxes. Valuation allowances are provided against deferred income tax assets if it is more likely than not that some portion or all of the deferred tax asset will not be realized. We currently provide income taxes on the earnings of foreign subsidiaries to the extent those earnings are taxable in the local jurisdictions. The effective tax rate for fiscal years 2004, 2003 and 2002 reflects the tax-exempt status of our Singapore operation, which has been given pioneer status, or exemption of taxes on non-passive income for five years as stated in our agreement with the Economic Development Board of Singapore. The five-year period ends December 31, 2007. We do not currently record deferred taxes on our investment in our Singapore operations, as all undistributed earnings are permanently reinvested back into the Singapore facility. If we were to record deferred taxes on our investment, the amount would be a $70.8 million liability as of July 3, 2004.

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Accounting for Stock Based Compensation

Stock options granted to employees typically have an exercise price equal to the fair market value of our common stock and vest ratably over four years. We apply APB 25 in accounting for stock option plans and as a result, generally no compensation expense is required to record. However, since the value of an option bears a direct relationship to our stock price, it is an effective incentive for management to create value for shareholders. We therefore view stock options as a critical component of its long-term performance-based compensation philosophy.

To calculate the pro forma effect of stock-based compensation consistent with SFAS no. 123, as amended by SFAS No. 148, we use the Black-Scholes option-pricing model. The assumptions used are expected volatility based upon the movement of the stock price since the grant date of the option, average expected option life based upon actual history of option grants being exercised, and risk free interest rate based upon current market price for loans of LIBOR plus.

Inflation

Inflation has not had a significant impact on our results of operations.

New Accounting Pronouncements

In February 2003, the Emerging Issues Task Force ratified Issue No. 00-21,”Revenue Arrangements with Multiple Deliverables,” (“Issue 00-21”). Issue 00-21 addresses certain aspects of the accounting by a vendor for arrangements under which it will perform multiple revenue-generating activities and addresses how to determine whether an arrangement involving multiple deliverables contains more than one unit of accounting. Issue 00-21 became effective for revenue arrangements entered into after June 30, 2003. The adoption of this EITF Issue did not have a material impact on our operating results.

In April 2003, the FASB issued SFAS No. 149, “Amendment of Statement 133 on Derivative Instruments and Hedging Activities.” This Statement improves financial reporting by requiring that contracts with comparable characteristics be accounted for similarly. This Statement is effective for contracts entered into or modified after June 30, 2003. The adoption of this statement did not have a material impact on our operating results.

In May 2003, FASB issued SFAS No. 150, “Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity.” This Statement establishes standards for how an issuer classifies and measures certain financial instruments with characteristics of both liabilities and equity. It requires that an issuer classify a financial instrument that is within its scope as a liability (or an asset in some circumstances). Many of those instruments were previously classified as equity. This Statement is effective for financial instruments entered into or modified after May 31, 2003 and otherwise is effective at the beginning of the first interim period beginning after June 15, 2003. The adoption of this statement did not have a material impact on our operating results.

In May 2003, the Emerging Issues Task Force (“EITF”) reached a consensus on Issue No. 01-08, “Determining Whether an Arrangement Contains a Lease.” EITF Issue No. 01-08 provides guidance on how to determine if an arrangement contains a lease that is within the scope of SFAS 13, “Accounting for Leases.” The provisions of EITF Issue No. 01-08 will apply primarily to arrangements agreed to or committed to after the beginning of an entity’s next reporting period beginning after May 28, 2003, or previous arrangements modified after the beginning of an entity’s next reporting period beginning after May 28, 2003. The adoption of this EITF Issue did not have a material impact on our operating results.

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In January 2003, the FASB issued FIN 46, “Consolidation of Variable Interest Entities an Interpretation of ARB No. 51.” FIN 46 addresses consolidation by business enterprises of variable interest entities. The FASB then issued FIN 46(R), “Consolidation of Variable Interest Entities an Interpretation of ARB No. 51,” which replaced FIN 46. Application of FIN 46(R) is required in financial statements of public entities that have interests in variable interest entities or potential variable interest entities commonly referred to as special-purpose entities for periods ending after March 15, 2004. As of July 3, 2004 we had no investments in variable interest entities, therefore there was no impact upon adoption.

On December 17, 2003, the Securities and Exchange Commission (the “SEC”) issued SAB No. 104, Revenue Recognition (“SAB 104”), which supercedes SAB No. 101, Revenue Recognition in Financial Statements (“SAB 101”). SAB 104’s primary purpose is to rescind accounting guidance contained in SAB 101 related to multiple element revenue arrangements, superceded as a result of the issuance of EITF 00-21, Accounting for Revenue Arrangements with Multiple Deliverables (“EITF 00-21”). Additionally, SAB 104 rescinds the SEC’s Revenue Recognition in Financial Statements Frequently Asked Questions and Answers (the “FAQ”) issued with SAB 101 that had been codified in SEC Topic 13, Revenue Recognition. Selected portions of the FAQ have been incorporated into SAB 104. While the wording of SAB 104 has changed to reflect the issuance of EITF 00-21, the revenue recognition principles of SAB 101 remain largely unchanged by the issuance of SAB 104. EITF 00-21 was effective for revenue arrangements entered into in fiscal periods beginning after June 15, 2003. The provisions of SAB 104 had no effect on our results of operations or financial position.

Foreign Currency Exposures

Our sales are denominated in U.S. dollars, and accordingly, we do not use forward exchange contracts to hedge exposures denominated in foreign currencies or any other derivative financial instruments for trading or speculative purposes. The effect of an immediate 10% change in exchange rates would not have a material impact on our future operating results or cash flows.

Interest Rate Risk

In connection with our bank agreement, we entered into an 18-month interest rate swap agreement with the same financial institution. The interest rate swap agreement essentially enabled us to manage the exposure to fluctuations in interest rates on a portion of our term loan.

Our term loan required us to pay interest based on a variable rate. Under the interest rate swap agreement; we were exchanging the variable rate interest on a portion of our term loan, equal to 50% of the outstanding loan amount, with a fixed rate of 5.0%. The interest rate swap agreement was in effect until June 2003, with the notional amount decreasing to $14.8 million over the effective period.

As a result of our early payoff of debt, the swap agreement was terminated in January 2003.

We do not use derivatives for trading or speculative purposes, nor are we party to leverage derivatives.

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We had interest expense of $0.3 million for the fiscal year 2004. The potential increase in interest expense for fiscal year 2004 from a hypothetical 2% adverse change in variable interest rates would be approximately $0.1 million.

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders

of Integrated Circuit Systems, Inc.:

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of Integrated Circuit Systems, Inc. and its subsidiaries at July 3, 2004 and June 28, 2003, and the results of their operations and their cash flows for each of the three years in the period ended July 3, 2004 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the index appearing under Item 15 (a) (2) on page 58 presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and financial statement schedule based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

PricewaterhouseCoopers LLP

Philadelphia, PA

September 10, 2004

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Integrated Circuit Systems, Inc.

Consolidated Balance Sheets

(In thousands, except per share data)

SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

31

Integrated Circuit Systems, Inc.

Consolidated Statements of Operations

(In thousands, except per share data)

SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

32

Integrated Circuit Systems, Inc.

Consolidated Statements of Shareholders’ Equity

(in thousands)