Lattice Semiconductor Schedules Conference Call

HILLSBORO, Ore. - March 23, 2004 - Lattice Semiconductor Corporation (NASDAQ: LSCC) announces that a telephone conference call with financial analysts to discuss fourth quarter and 2003 year end financial results is now scheduled for 2:30 pm (Pacific Time) on March 24, 2004. The Company will also answer questions about the Lattice-Fujitsu announcement made today. Investors may listen live to our conference call via the web atwww.lscc.com and the call will be archived there for replay until our next earnings conference call for the March 31, 2004

Lattice Semiconductor Corporation, the inventor of in-system programmable™ (ISP™) logic products, 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 Chips(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.

Lattice Semiconductor Corporation, L (& design), Lattice (& design), in-system programmable, ISP 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.

For more information contact:

Roddy Sloss

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