UMC Validates the Mentor Graphics Calibre xRC Parasitic Extraction Solution for 90nm Process Technology

WILSONVILLE, Ore., June 28, 2004 - Mentor Graphics Corporation (Nasdaq: MENT) today announced that Calibre? xRC, Mentor's transistor-level parasitic extraction solution, has been silicon validated by UMC for its 90 nanometer process technology.

Calibre xRC is an advanced tool that meets the stringent demands of nanometer technologies. Especially significant for 90nm designs is the pairing of Calibre with Calibre LVS, the layout vs. schematic (LVS) tool. This combination provides actual measured device parameters that can be back-annotated to the source netlist for post layout analysis. This is a key factor in accurate nanometer silicon modeling, positively impacting yield and contributing toward first pass success of integrated circuit (IC) designs.

"At 90nm, it is imperative that our customers have access to the most advanced methods of achieving design and silicon success," said Ken Liou, division director, Design Support Division at UMC. "Calibre's accuracy, capability and integration in physical verification and parasitic extraction will provide a proven solution that our customers can quickly adopt in their flows."

"UMC is ensuring the success of nanometer designs by directly addressing the physical issues that can hamper that success," said Joe Sawicki, vice president of the Design-to-Silicon division at Mentor Graphics.  "By validating tools engineered for advanced processes, customers will be prepared for the shrinking geometries of the future."

About UMC
UMC (NYSE: UMC, TSE: 2303) is a leading global semiconductor foundry that manufactures advanced process ICs for applications spanning every major sector of the semiconductor industry. UMC delivers cutting-edge foundry technologies that enable sophisticated system-on-chip (SOC) designs, including 90nm copper, 0.13um copper, and mixed signal/RFCMOS.  UMC is also a leader in 300mm manufacturing; Fab 12A in Taiwan and Singapore-based UMCi are both in volume production for a variety of customer products. UMC employs over 9,000 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web at http://www.umc.com.

About Mentor Graphics
Mentor Graphics Corporation (Nasdaq: MENT) is a world leader in electronic hardware and software design solutions, providing products, consulting services and award-winning support for the world's most successful electronics and semiconductor companies.  Established in 1981, the company reported revenues over the last 12 months of about $675 million and employs approximately 3,700 people worldwide. Corporate headquarters are located at 8005 S.W. Boeckman Road, Wilsonville, Oregon 97070-7777; Silicon Valley headquarters are located at 1001 Ridder Park Drive, San Jose, California 95131-2314. World Wide Web site: http://www.mentor.com/.

Mentor Graphics and Calibre are registered trademarks of Mentor Graphics Corporation. All other company or product names are the registered trademarks or trademarks of their respective owners.

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For more information, please contact:
Carole Thurman Mentor Graphics 503.685.4716 carole_thurman@mentor.com	Kara Udziela Weber Shandwick 503.552.3731 kudziela@webershandwick.com