MoSys

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MoSys, Inc.
FormerlyMonolithic System Technology (1991–2006)
Company typePublic
IndustrySemiconductor
FoundedSeptember 16, 1991; 32 years ago (1991-09-16) in San Jose, California
FounderFu-Chieh Hsu
DefunctDecember 20, 2021; 2 years ago (2021-12-20)
FateMerger with Peraso Technologies
Products
Websitewww.mosys.com

MoSys, Inc., originally Monolithic System Technology (MoST), was a fabless semiconductor design company founded in 1991. The company primarily designed memory chips and were especially known for their Multibank DRAM and 1T-SRAM technologies—the latter used on Nintendo's Wii and GameCube video game consoles.

History

MoSys was incorporated in San Jose, California, on September 16, 1991, as Monolithic System Technology.[1] The company was co-founded by Fu-Chieh Hsu, who also served as its chairman and president until December 2004.[2] Joined by Fu-Chieh were Wingyu Leung and Gary Banta, both vice presidents of design engineering. The initial design team staffed engineers poached from Integrated Device Technology, ISSI, Rambus, and Plus Logic. By 1994, the company had received $7.5 million in venture funding.[3]

The company's first major product was a specialized type of dynamic random-access memory that Monolithic termed Multibank DRAM (MDRAM).[3] The initial entry in this series of chips was a 4-Mb chip, composed of 16 cells of 16-bit-wide 16-kB memory; a simple interface on each of the cells connects them to a high-speed bus on the chip. On each leading edge and trailing edge of the chip-enable pulse, memory arrays output data onto the internal bus, achieving a 32-bit word on every pulse.[4] MDRAM secured design wins in July 1994 with Tseng Labs, Trident Microsystems, and S3 Inc. using the chips in their graphics accelerator cards. Access time was rated at 15µs, compared to 60 µs of contemporary chips.[5] DRAM required a proprietary interface and could not be adapted to the SIMM card standard for desktop computer memory of its day.[3] Volume production, handled by an outside fabricator, was achieved in late 1994.[6]

In July 1998 Monolith introduced a series of pipelined-burst SRAMs for the notebook computer market.[7] In September 1998 they introduced 1T-SRAM, a pseudo-static random-access memory technology.[8] Nintendo signed a contract with MoSys to use 1T-SRAM in its codenamed Dolphin video game console,[9] later unveiled as the GameCube in 2001. Over 25 million units of 1T-SRAM were produced up to October 2002.[10] A newer version of 1T-SRAM, dubbed 1T-SRAM Classic, was patented and introduced in 2006.[11] Nintendo re-entered a contract with Monolith to use it in the Wii, in 2006.[12]

The company began narrowing its chip sales in 1998, in favor of licensing its patents to other semiconductor memory companies.[13] In September 2000, Monolithic's board members voted to reincorporate the company in Delaware.[14] The company still operated within California, relocating its research office to nearby Sunnyvale by June 2001. The same month, the company filed its initial public offering, mediated through A. G. Edwards.[15] The company's stock rose 12 percent within the first day of its launch,[13] leading to a net proceed of $51 million for Monolith.[14] The Wall Street Journal saw this as a rekindling of interest in technology companies in the stock market, which had fallen in the twilight of the dot-com bubble.[13]

In February 2004, Synopsys announced that it would acquire Monolithic for US$432 million.[16] However, a month later, Synopsys terminated their agreement to buy out Monolith and paid the company a $10 million termination fee as part of the merger contract.[17] This came after Synopsys had switched the terms of their acquisition, proposing to Monolithic a $13.50-per-share all-cash offer, incurring a very high premium. Monolith followed with a lawsuit in Delaware courts seeking to force Synopsys to finish their acquisition. Monolith dropped the suit in July 2004 without payment or liability. In late December 2004, following ill-health and a tough year for the company, chairman Fu-Chieh resigned from Monolith, with chief financial officer Mark Voll taking the mantle.[2]

Monolith had by the end of December 31, 2005 76 full-time employees—25 executives in Delaware and 51 engineers in the company's research and development lab in Sunnyvale. In May 2006, the company formally renamed themselves to MoSys.[11]

By the late 2010s MoSys had pivoted to designing chips for security, telecommunications, and datacenters. In December 2021, they merged with Peraso Technologies, a designer of mmWave semiconductor, to emerge as Peraso Inc.[18]

Citations

References

  • AccessWire (December 20, 2021). "MoSys and Peraso Technologies Close Business Combination". Yahoo! News. Archived from the original on October 18, 2022.
  • Ascierto, Jerry (April 19, 1999). "MoSys Aims SRAMs at Low End". Electronic News. 45 (16). Sage Publications: 16 – via Gale.
  • Bailey, Brian; Kathy Werner (2007). Intellectual Property for Electronic Systems: An Essential Introduction. Professional Education International. ISBN 9781931695572 – via Google Books.
  • Block, Gerry (June 19, 2006). "NEC and MoSys Announce Wii Hardware Partnerships". IGN. Red Ventures. Archived from the original on May 8, 2022.
  • Bloomberg L.P. (February 24, 2004). "Synopsys Acquisitions". The New York Times. The New York Times Company: 10. Archived from the original on August 21, 2020.
  • Clarke, Peter; Yoshiko Hara (September 3, 1999). "Nintendo to use Mosys' 1-transistor SRAM". Electrical Engineering Times. AspenCore. Archived from the original on October 18, 2022.
  • Crothers, Brooke (July 18, 1994). "DRAM chip for video announced". InfoWorld. 16 (29). IDG Publications: 32 – via Google Books.
  • Glaskowsky, Peter N. (September 13, 1999). "MoSys Explains 1T-SRAM Technology: Unique Architecture Hides Refresh, Makes DRAM Work Like SRAM" (PDF). Microprocessor Report. 13 (12). Cahners. {{cite journal}}: Unknown parameter |agency= ignored (help)
  • Hennessey, Raymond (June 29, 2001). "Technology Firm's IPO Rises 12%". The Wall Street Journal. Dow Jones & Company: C14 – via ProQuest.
  • LaPedus, Mark (December 31, 2004). "MoSys' chairman, CEO resigns, cites health problems". Electrical Engineering Times. AspenCore. Archived from the original on October 18, 2022.
  • McLeod, Jonah (July 25, 1994). "Start-up company challenges 3-D graphics DRAM market". Electronics. 67 (14). Endeavor Business Media: 5 – via Gale.
  • Schroeder, Eric (July 25, 1994). "Startup Pushes New Architecture to Boost Memory". PC Week. 11 (29). Ziff-Davis: 40 – via Gale.
  • Staff writer (July 18, 1994). "IDT-backed MoSys to bare multibank DRAM scheme". Electronic News. 40 (2023). Sage Publications: 95 – via Gale.
  • Staff writer (June 25, 2001). "Equity Offerings Planned This Week". The New York Times. The New York Times Company: 6 – via ProQuest.
  • Staff writer (October 15, 2002). "25 Million 1T-SRAM Units Produced". IGN. Red Ventures. Archived from the original on April 21, 2022.