EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 8, 2007 relating to the financial statements, financial statement schedule, management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in Lattice Semiconductor Corporation’s Annual Report on Form 10-K for the year ended December 30, 2006.

/s/ PricewaterhouseCoopers LLP

Portland, Oregon

May 30, 2007