Interface Board Design Relies on LatticeEC FPGAs

Engineering Services Firm Impressed with Device Cost, Performance, Migration Path

HILLSBORO, OR - JULY 11, 2005 - Lattice Semiconductor Corporation (NASDAQ: LSCC) today announced that engineering services firm Boston Engineering Corporation has incorporated the LatticeEC™ FPGA in the design of an interface board for a high-end test system. The board is a VME-based interface that is a high-speed digital pattern generator and also provides general-purpose analog and digital I/O. The LatticeEC FPGA provides a slave interface to the VME bus master and also provides control to the external analog-to-digital converters, digital-to-analog converters, SRAM and general purpose digital I/O. The LatticeEC device performs all the digital pattern execution locally in order to meet speed requirements. The FPGA contains registers for looping, triggers, breakpoints, single stepping and managed patterns stored in external memory.

Guy Fichera, Electrical Engineering Manager for Boston Engineering, said, "As FPGA prices continue to fall, we are looking more frequently for programmable logic design solutions. I had not used the Lattice FPGAs before. However, our customer specified the Lattice devices, and I was pleasantly surprised by how easily and quickly we were able to come up to speed on the LatticeEC FPGA. The design software was easy to use, and the local Lattice support was outstanding.

"The price/performance ratio of the Lattice device was very attractive," Fichera continued, "and the device migration path was a definite plus. We were able to move the design from one density level to another with no change in the FPGA footprint. Ultimately we decided to implement the entire design with the LatticeEC devices because the cost effectiveness of the I/O counts was so much more favorable than alternative methods. In the end, each test system uses 75 LatticeEC devices, supporting up to 2000 test channels."

"Our low cost, high performance LatticeEC and LatticeECP™ FPGAs have been very well received by customers; just a year after their introduction, these FPGAs continue to establish themselves as the low cost FPGA of choice," said Stan Kopec, Lattice vice president of corporate marketing. "We're particularly pleased that a sophisticated customer such as Boston Engineering embraced system-wide use of the LatticeEC FPGA."

About the LatticeECP and LatticeEC FPGA Families

The LatticeECP and LatticeEC FPGA device families are architected to provide the most optimized feature sets combined with the lowest total solution costs of any FPGAs. The new LatticeECP-DSP™ products, targeted for high-performance DSP applications, provide up to a 50% performance and 75% logic utilization improvement over other low cost solutions when implementing common DSP functions. The LatticeEC FPGA product family, targeted for general-purpose FPGA applications, is a precise and targeted response to the market's explosive demand for low cost, architecturally streamlined logic solutions. Through advanced 130nm silicon technology, an optimized architecture and proprietary circuit design, the new Lattice devices lower total solution costs by up to 30% to 50% compared with existing FPGA solutions, and are expected to broaden the adoption of FPGAs within the $20 billion ASIC marketplace.

About Boston Engineering Corporation

Boston Engineering is an outsourced engineering services firm that delivers innovative and timely solutions by utilizing its Total System Responsibility™ (TSR) philosophy to meet demanding market needs. Through effective project management using a systems approach to engineering, proven development process and complete solution orientation, Boston Engineering helps companies seize opportunities by bringing products to market faster that will save time and money in the long term. Projects range from developing specifications through building and testing prototypes. Headquartered in Waltham, MA, Boston Engineering clients range from startups to Fortune 100 companies within the manufacturing, electronics, energy/environmental, food service, defense/homeland security, medical/biotech, and high technology industries and markets. For more information about Boston Engineering, visit

http://www.boston-engineering.com

About Lattice Semiconductor

Lattice Semiconductor Corporation provides the industry's broadest range of Field Programmable Gate Arrays ( FPGA ) and Programmable Logic Devices ( PLD ), including Field Programmable System Chips ( FPSC ), Complex Programmable Logic Devices ( CPLD ), Programmable Mixed-Signal Products ( ispPAC ® ) and Programmable Digital Interconnect Devices ( ispGDX ® ). Lattice also offers industry leading SERDES products.

Lattice is "Bringing the Best Together" with comprehensive solutions for system design, including an unequaled portfolio of non-volatile programmable devices that deliver instant-on operation, security and "single chip solution" space savings.

Lattice products are sold worldwide through an extensive network of independent sales representatives and distributors, primarily to OEM customers in communications, computing, industrial, consumer, automotive, medical and military end markets. Company headquarters are located at 5555 NE Moore Court, Hillsboro, Oregon 97124-6421, USA; telephone 503-268-8000, fax 503-268-8037. For more information about Lattice Semiconductor Corporation, visit http://www.latticesemi.com/

Statements in this news release looking forward in time are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that forward-looking statements involve risks and uncertainties including market acceptance and demand for our new products, our dependencies on our silicon wafer suppliers, the impact of competitive products and pricing, technological and product development risks and other risk factors detailed in the Company's Securities and Exchange Commission filings. Actual results may differ materially from forward-looking statements.

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Lattice Semiconductor Corporation, Lattice (& design), L (& design), ispGDX, ispPAC, LatticeEC, LatticeECP, LatticeECP-DSP and specific product designations are either registered trademarks or trademarks of Lattice Semiconductor Corporation or its subsidiaries in the United States and/or other countries.

GENERAL NOTICE: Other product names used in this publication are for identification purposes only and may be trademarks of their respective holders.