Integrated Silicon Solution (ISSI) 10-Q 2009 Q2 Quarterly report

Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Scott D. Howarth, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Integrated Silicon Solution, Inc. on Form 10-Q for the quarterly period ended March 31, 2009 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Integrated Silicon Solution, Inc.

By:/s/ Scott D. Howarth

Scott D. Howarth

President and Chief Executive Officer

May 8, 2009

I, John M. Cobb, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Integrated Silicon Solution, Inc. on Form 10-Q for the quarterly period ended March 31, 2009 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Integrated Silicon Solution, Inc.

By:/s/ John M. Cobb

John M. Cobb

Vice President and Chief Financial Officer

May 8, 2009