EXHIBIT 23.1
Published on May 29, 2009
Exhibit
23.1
CONSENT
OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We
consent to the incorporation by reference in the Registration Statements (Form
S-3 No. 333-149999 and Form S-8 Nos. 33-59686, 33-80072, 33-81690, 33-83196,
333-872, 333-40791, 333-67215, 333-93571, 333-51322, 333-53876, 333-73506,
333-96791, 333-99655, 333-101696, 333-103764, 333-109486, 333-119939, 333-140773
and 333-149460) of Microchip Technology Incorporated of our reports dated May
28, 2009, with respect to the consolidated financial statements of Microchip
Technology Incorporated and the effectiveness of internal control over financial
reporting of Microchip Technology Incorporated, included in this Annual
Report (Form 10-K) for the year ended March 31, 2009.
/s/ Ernst
& Young LLP
Phoenix,
Arizona
May 28,
2009