SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* SIMONCIC RICHARD J (Last) (First) (Middle) C/O MICROCHIP TECHNOLOGY INCORPORATED 2355 WEST CHANDLER BOULEVARD (Street) CHANDLER AZ 85224-6199 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MICROCHIP TECHNOLOGY INC [ MCHP ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) VP, Analog and Intrfc Prod Div
	3. Date of Earliest Transaction (Month/Day/Year) 02/01/2010
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/01/2010		M		1,375	A	$26.51	79,280(1)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(1)
Conmmon Stock	02/01/2010		F		534	D	$26.51	78,746(2)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(2)
Common Stock	02/01/2010		M		46	A	$26.51	78,792(3)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(3)
Common Stock	02/01/2010		F		18	D	$26.51	78,774(4)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(4)
Common Stock	02/01/2010		M		575	A	$26.51	79,349(5)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(5)
Common Stock	02/01/2010		F		223	D	$26.51	79,126(6)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(6)
Common Stock	02/01/2010		M		500	A	$26.51	79,626(7)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(7)
Common Stock	02/01/2010		F		194	D	$26.51	79,432(8)	I	Shares held Directly and Indirectly, by Trust and Reporting Person's Wife and Mother-in-Law(8)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$26.51	02/01/2010		M			1,375	(9)	(9)	Common Stock	11,000	$0	0	D
Restricted Stock Units	$26.51	02/01/2010		M			46	(10)	(10)	Common Stock	91	$0	0	D
Restricted Stock Units	$26.51	02/01/2010		M			575	(11)	(11)	Common Stock	4,600	$0	4,025	D
Restricted Stock Units	$26.51	02/01/2010		M			500	(12)	(12)	Common Stock	500	$0	0	D

Explanation of Responses:

1. Of the 79,280 shares held, 7,500 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

2. Of the 78,746 shares held, 6,966 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

3. Of the 78,792 shares held, 7,012 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

4. Of the 78,774 shares held, 6,994 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

5. Of the 79,349 shares held, 7,569 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

6. Of the 79,126 shares held, 7,346 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

7. Of the 79,626 shares held, 7,846 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

8. Of the 79,432 shares held, 7,652 shares were held Directly; 71,555 shares were held by Trust; and 225 shares were held by Reporting Person's wife and mother-in-law.

9. The restricted stock units vest in eight equal quarterly installments beginning May 1, 2008. Vested shares will be delivered to the reporting person upon vest.

10. The restricted stock units will vest in 45 shares on November 1, 2009 and 46 shares on February 1, 2010 as long as the individual remains a service provider through the vesting date and the Company achieves performance targets for operating income in the six month period ending September 30, 2008.

11. The restricted stock units vest in eight equal quarterly installments beginning February 1, 2010, as long as the individual remains a service provider through the vesting date and the Company achieves performance targets for operating profit in the quarter ending June 30, 2009. Vested shares will be delivered to the reporting person upon vest.

12. The restricted stock units will vest in full on February 1, 2010 as long as the individual remains a service provider through the vesting date and the Company achieves performance targets for operating profit in the quarter ended June 30, 2009. Vested shares will be delivered to the reporting person upon vest.

Remarks:

	Deborah L. Wussler, as Attorney-in-Fact	02/02/2010
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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