NEC Electronics Embeds MoSys' 1T-SRAM Memory Technology in 90nm Custom ASIC; Companies Extend Agreement To Use 1T-SRAM In Upcoming Consumer Applications

SUNNYVALE, Calif.--(BUSINESS WIRE)--March 24, 2005 -- MoSys, Inc. (Nasdaq:MOSY), the industry's leading provider of high-density system-on-chip (SoC) embedded memory solutions announced today the renewal of the existing partnership with NEC Electronics to incorporate MoSys' 1T-SRAM(R) technologies into high volume semiconductor devices for consumer applications manufactured on NEC Electronics' 90nm process generation.

"Since the commencement of our original licensing agreement in March 1999, NEC Electronics has successfully deployed MoSys' 1T-SRAM because of its unique combination of performance, density and power capabilities not available from any other competing memory technologies," said Tom Nukiyama, senior technical director at NEC Electronics America. "We now look to extend our relationship with MoSys to jointly offer our ASIC customers requiring large quantities of high-performance embedded memory a compelling solution to enhance their consumer electronics SoC designs. The manufacturability of 1T-SRAM memory makes it the ideal technology for reducing costs and increasing quality, which is why, at the end of the day, we see it as the ultimate drop-in memory solution."

"We are pleased that NEC Electronics will continue to use our 1T-SRAM embedded memory technologies on even more aggressive processes," said Karen Lamar, vice president of Sales and Marketing at MoSys, Inc. "This combination of our unique memory architecture and NEC Electronics' most advanced semiconductor fabrication technology provides SoC designers with tremendous capability for their next generation of highly-integrated products."

About MoSys

Founded in 1991, MoSys (Nasdaq:MOSY), develops, licenses and markets innovative memory technologies for semiconductors. MoSys' patented 1T-SRAM technologies offer a combination of high density, low power consumption, high speed and low cost unmatched by other available memory technologies. The single transistor bit cell used in 1T-SRAM memory results in the technology achieving much higher density than traditional four or six transistor SRAMs while using the same standard logic manufacturing processes. 1T-SRAM technologies also offer the familiar, refresh-free interface and high performance for random address access cycles associated with traditional SRAMs. In addition, these technologies can reduce operating power consumption by a factor of four compared with traditional SRAM technology, contributing to making them ideal for embedding large memories in System on Chip (SoC) designs. MoSys' licensees have shipped more than 80 million chips incorporating 1T-SRAM embedded memory technologies, demonstrating excellent manufacturability in a wide range of silicon processes and applications. MoSys is headquartered at 1020 Stewart Drive, Sunnyvale, California 94085. More information is available on MoSys' website at http://www.mosys.com.

Forward-Looking Statements

This press release may contain forward-looking statements about the Company including, without limitation, benefits and performance expected from use of the Company's 1T-SRAM technology.

Forward-looking statements are based on certain assumptions and expectations of future events that are subject to risks and uncertainties. Actual results and trends may differ materially from historical results or those projected in any such forward-looking statements depending on a variety of factors. These factors include but are not limited to, customer acceptance of our 1T-SRAM technologies, the timing and nature of customer requests for our services under existing license agreements, the timing of customer acceptance of our work under such agreements, the level of commercial success of licensees' products such as cell phone hand sets, ease of manufacturing and yields of devices incorporating our 1T-SRAM, our ability to enhance the 1T-SRAM technology or develop new technologies, the level of intellectual property protection provided by our patents, the vigor and growth of markets served by our licensees and customers and operations of the Company and other risks identified in the Company's most recent annual report on Form 10-K filed with the Securities and Exchange Commission, as well as other reports that MoSys files from time to time with the Securities and Exchange Commission. MoSys undertakes no obligation to update publicly any forward-looking statement for any reason, except as required by law, even as new information becomes available or other events occur in the future.

1T-SRAM(R) is a MoSys trademark registered in the U.S. Patent and Trademark Office. All other trade, product, or service names referenced in this release may be trademarks or registered trademarks of their respective holders.