RAD Data Communications Chooses LatticeEC FPGA and ispMACH 4000 CPLD for its Optimux Multiplexer

Superior Price/Performance Ratio and I/O Combination are Key Factors in Decision

HILLSBORO, OR - August 30, 2005 - Lattice Semiconductor Corporation (NASDAQ: LSCC) today announced that RAD Data Communications has selected the LatticeEC™ FPGA as well as the ispMACH™ 4000 CPLD for its advanced Optimux-T3 multiplexer. The Optimux-T3 multiplexer provides a highly cost-effective and simple solution for transporting multiple E1 and T1 links, as well as a combination of E1 and T1, over a standard T3 electrical signal or fiber link. The Optimux provides flexible solutions to meet the specific requirements of a broad range of applications. The Lattice devices manage the cross connect on the E1/T1 platform, and provide the interface logic to the Framer as well as other circuits.

"We found the Lattice FPGA and CPLD devices were an extremely cost effective design solution for our product," said Ernest Leizer, Team Leader of the ATM Group at RAD. "Of course, we evaluated devices from several suppliers, and found the price/performance ratio and I/O combination of the Lattice devices ideal for our project. In fact, we are now looking at the new LatticeXP™ non-volatile FPGA for use in future designs in order to eliminate the boot PROM."

"Just a year after their introduction, LatticeEC and LatticeECP™ FPGAs are being used in a remarkable variety of designs around the world," said Stan Kopec, Lattice vice president of corporate marketing. "Customers such as RAD Data Communications are discovering that our low cost FPGAs deliver high performance. And now, with the recent introduction of the non-volatile LatticeXP FPGAs, customers can take advantage of the benefits of non-volatility without having to forfeit SRAM technology," Kopec concluded.

About the LatticeECP-DSP™ and LatticeEC FPGA Families

The LatticeECP-DSP™ 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 LatticeXP FPGAs

Non-volatile LatticeXP FPGAs deliver the benefits of instant-on operation, excellent security and a single-chip implementation, and provide cost-effective alternatives to traditional SRAM-based FPGAs and their associated boot memories. The ispXP™ technology used in the LatticeXP devices combines SRAM and non-volatile Flash memory to deliver an FPGA that is both non-volatile and infinitely reconfigurable. The SRAM-based memory cells control the operation of the device logic and are loaded from the on-chip Flash memory in less than 1mS at power-up -- providing instant-on capability -- or on user command. Unlike SRAM-based FPGAs, the LatticeXP device does not require an external boot memory and so provides a single-chip solution with the associated benefits of reduced board area and simplified system manufacture. The absence of an external boot device also eliminates the need for an external bit-stream at boot up and the possibility of bitstream snooping, a major security concern with SRAM FPGAs. Security features prohibit bit-stream readback from the SRAM and Flash sections of the devices to further enhance security.

About RAD Data Communications

Established in 1981, privately owned RAD Data Communications has achieved international recognition as a major manufacturer of high quality access equipment for data communications and telecommunications applications. These solutions serve the data and voice access requirements of service providers, incumbent and new carriers, and enterprise networks, by reducing infrastructure investment costs while boosting competitiveness and profitability. The company's installed base exceeds 8,000,000 units and includes more than 150 carriers and operators around the world. These customers are supported by 18 RAD offices and more than 200 distributors in 105 countries. For more information about RAD Data Communications, visit http://www.rad.com/

RAD is a member of the RAD Group of companies, a world leader in networking and internetworking product solutions.

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, ispMACH, ispPAC, ispXP, LatticeEC, LatticeECP, LatticeECP-DSP, LatticeXP 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.

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