Lattice Semiconductor Corporation Announces Appointments of Chief Executive Officer and Chairman of the Board

HILLSBORO, Ore. - August 9, 2005 - HILLSBORO, Oregon - August 9, 2005 - Lattice Semiconductor Corporation (NASDAQ: LSCC) today announced the appointments of Stephen A. Skaggs as Chief Executive Officer and Patrick S. Jones as Chairman of the Board. Mr. Skaggs joined Lattice in 1992 and served as Senior Vice President and Chief Financial Officer from 1996 until 2003, when he was appointed President. Mr. Jones joined the Lattice Board of Directors in January 2005, and previously served as Senior Vice President and Chief Financial Officer at Gemplus SA, Vice President Finance, Corporate Controller for Intel Corporation and Chief Financial Officer of LSI Logic. Mr. Skaggs has been acting CEO and Mr. Jones has been acting Chairman since June 14, 2005.

The Company's Board of Directors has also terminated the employment of Cyrus Y. Tsui, the Company's incumbent Chief Executive Officer and Chairman of the Board, and Rodney F. Sloss, the incumbent Vice President of Finance.

The Company's Audit Committee has concluded its previously announced independent examination, concerning issues primarily associated with executive compensation and several items pertaining to the Company's internal controls. The Company is not aware of any required adjustments to its historical financial results in connection with these matters. The Company has furnished information regarding the matters examined by the Audit Committee to the Securities and Exchange Commission, which is conducting an ongoing informal inquiry into the Company's prior restatement of financial results.

Lattice Semiconductor Corporation designs, develops and markets the broadest range of Field Programmable Gate Arrays ( FPGA ), Field Programmable System Chips ( FPSC ) and high-performance ISP Programmable Logic Devices ( PLD ), including Complex Programmable Logic Devices ( CPLD ), Programmable Analog Components ( PAC ), and Programmable Digital Interconnect ( GDX ). Lattice also offers industry leading SERDES products. Lattice provides total solutions for today's system designs by delivering innovative programmable silicon products that embody leading-edge system expertise.

Lattice products are sold worldwide through an extensive network of independent sales representatives and distributors, primarily to OEM customers in the communications, computing, industrial and military end markets. Company headquarters are located at 5555 N.E. Moore Court, Hillsboro, Oregon 97124 USA. For more information access our web site at http://www.latticesemi.com .

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Lattice Semiconductor Corporation, Lattice (& design), L (& design), LatticeECP, LatticeXP, MachXO, ispLever, LatticeMico8 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.