EXHIBIT 21.1

MICROCHIP TECHNOLOGY INCORPORATED

LIST OF SIGNIFICANT SUBSIDIARIES

			Microsemi Corp. - Holding 2 Office 28, Verdala Business Centre, Level 2 LM Complex, Brewery Street Central Business District Birkirkara, CBDE, 3040, Malta			Microchip Communications, LLC 2355 W. Chandler Blvd. Chandler, Arizona - 85224 USA
			MBarb Malta Limited Office 28, Verdala Business Centre, Level 2 LM Complex, Brewery Street Central Business District Birkirkara, CBDE 3040, Malta			Microsemi Solutions UK Limited Castlegate Business Park, Unit 4 Caldicot, Monmouthshire, UK  NP26 5AD
			Microchip Malta BMD Limited Office 28, Verdala Business Centre, Level 2 LM Complex, Brewery Street Central Business District Birkirkara, CBDE 3040, Malta			Microsemi - IOM Limited 2nd Floor, St. Mary's Court 20 Hill Street Douglas, Isle of Man, IM1 1EU
			Microchip Technology (Thailand) Co., Ltd. 14 Moo 1, Tambol Wangtakien Amphur Muang Chacherngsao Chacherngsao - 24000 Thailand			Microsemi Corp. – Holding Office 28, Verdala Business Centre, Level 2 LM Complex, Brewery Street Central Business District Birkirkara, CBDE 3040, Malta
			Silicon Storage Technology Inc. 2355 W. Chandler Boulevard Chandler, AZ 85224			Microsemi Corporation 2355 W. Chandler Boulevard Chandler, AZ 85224
			MCHP Technology Malta Limited Office 28, Verdala Business Centre, Level 2 LM Complex, Brewery Street Central Business District Birkirkara, CBDE 3040, Malta			Microchip Technology Ireland Limited Ground Floor, Block W East Point Business Park Dublin 3, Ireland
			Microsemi SoC Corp. 2355 W. Chandler Boulevard Chandler, AZ 85224			Microsemi Solutions SDN BHD. Level 1, Building 3 Plot 10 Bayan Lepas Technoplex Bayan Lepas Industrial Zone, Phase 4 Penang, Malaysia  11900
			Microchip Technology LLC 2355 W. Chandler Boulevard Chandler, AZ 85224			Microsemi Storage Solutions, Inc. 2355 W. Chandler Boulevard Chandler, AZ 85224