Lattice Semiconductor Corporation Public Offering Declared Effective

HILLSBORO, OR. - July 31, 2000 - Lattice Semiconductor Corporation (NASDAQ: LSCC), today announced that its public offering was declared effective by the Securities and Exchange Commission for the sale of 4,000,000 shares of common stock, excluding the option granted to the underwriters to purchase up to 600,000 additional shares to cover underwriters' over-allotments. Lattice expects that the shares will be delivered to the underwriters on August 4, 2000. The offering was co-managed by Goldman, Sachs & Co., Morgan Stanley Dean Witter and Prudential Volpe Technology Group, a unit of Prudential Securities.

A copy of the Prospectus relating to the offering may be obtained from Goldman, Sachs & Co., 85 Broad Street, New York, NY 10002, (212) 902-1000; Morgan Stanley Dean Witter, Attention: Prospectus Department, 1585 Broadway, New York, NY 10036; Prudential Securities, 111 8th Avenue, 5th Floor, New York, NY 10011, (212) 776-8190.

For more information contact:

Roddy Sloss
Vice President, Finance
Lattice Semiconductor Corporation
(503) 268-8000