UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.      )

Filed by the Registrant x                            Filed by a Party other than the Registrant ¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material Pursuant to §240.14a-12

LATTICE SEMICONDUCTOR CORPORATION

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

x No fee required.

¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1) Title of each class of securities to which the transaction applies:

(2) Aggregate number of securities to which the transaction applies:

(3) Per unit price or other underlying value of the transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4) Proposed maximum aggregate value of the transaction:

(5) Total fee paid:

¨ Fee paid previously with preliminary materials.

¨ Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1) Amount Previously Paid:

(2) Form, Schedule or Registration Statement No.:

(3) Filing Party:

(4) Date Filed:

Lattice Semiconductor Corporation

Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting

to Be Held on Tuesday, May 4, 2010

The Proxy Statement, 2009 Form 10-K and other proxy materials are available at:

http://www.proxyvoting.com/lscc

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet.

We encourage you to access and review all of the important information contained in the proxy materials before voting.

LATTICE SEMICONDUCTOR CORPORATION	If you want to receive a paper or e-mail copy of these documents, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy as instructed below on or before April 20, 2010 to facilitate timely delivery.
	TO REQUEST PAPER COPIES OF PROXY MATERIALS:
	(please reference your 11-digit control number when requesting materials)
	By opting out to receive printed materials, your preference for future proxy mailings will be kept on our file.
	Telephone:	1-888-313-0164
		(outside of the U.S. and Canada call 201-680-6688).
	Email:	shrrelations@bnymellon.com
		(you must reference your 11-digit control number in your email)
	Internet:	http://www.proxyvoting.com/lscc

TO VOTE YOUR SHARES SEE INSTRUCTIONS ON REVERSE SIDE

This is not a proxy card. You cannot use this notice to vote your shares.

Dear Lattice Semiconductor Corporation Shareholder:

The 2010 Annual Meeting of Shareholders of Lattice Semiconductor Corporation (the “Company”) will be held at the corporate headquarters, 5555 NE Moore Court, Hillsboro, Oregon 97124, on Tuesday, May 4, 2010, at 1:30 p.m. Pacific time.

Proposals to be considered at the Annual Meeting:

(1) To elect three directors, each for a term of one year;

(2) To ratify the appointment of KPMG LLP as our independent registered public accounting firm for the fiscal year ending January 1, 2011.

The Board recommends a vote “FOR” Items 1 and 2.

The Board of Directors has fixed the close of business on March 10, 2010 as the record date (the “Record Date”) for the determination of shareholders entitled to receive notice of and to vote at the Annual Meeting or any adjournment(s) thereof.

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Shareholders of record as of the Record Date are encouraged and cordially invited to attend the Annual Meeting.

Meeting Location:

Lattice Semiconductor Corporation

5555 NE Moore Court

Hillsboro, OR 97124

You can find directions to the Annual Meeting at: www.latticesemi.com.

The following materials are available for you to review online:

• the Company’s 2010 Proxy Statement (including all attachments thereto);

• the 2009 Form 10-K (which is not deemed to be part of the official proxy soliciting materials); and

• any amendments to the foregoing materials that are required to be furnished to shareholders.

To request a paper copy of the Proxy Materials:

(you must reference your 11-digit control number located on the reverse side of this form)

Telephone:	1-888-313-0164 (outside of the U.S. and Canada call 201-680-6688)
Email:	shrrelations@bnymellon.com (you must reference your 11-digit control number in your email)
Internet:	http://www.proxyvoting.com/lscc

The Proxy Materials for Lattice Semiconductor Corporation are available to review at:

http://www.proxyvoting.com/lscc

Have this notice available when you request a PAPER copy of the Proxy Materials,

when you want to view your proxy materials online

OR WHEN YOU WANT TO VOTE YOUR PROXY ELECTRONICALLY.

HOW TO VOTE BY INTERNET

We encourage you to review the proxy materials online before voting.

Use the Internet to vote your shares. On the landing page of the above website in the box labeled

“To Vote Your Shares by Internet” click on “Vote Now” to access the electronic proxy card and vote your shares.

Have this notice in hand when you access the website.

You will need to reference the 11-digit control number located on the reverse side.

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