EXHIBIT 21.1

MICROCHIP TECHNOLOGY INCORPORATED

LIST OF SIGNIFICANT SUBSIDIARIES

Microchip Technology Australia PTY Ltd.

Suite 32, 41 Rawson St.

Epping, 2121 NSW Australia

Microchip Australia Holdings Pty Ltd

45 Colebard Street West

Acacia Ridge, Queensland 4110 Australia

Hi-Tech Software Pty Ltd

45 Colebard Street West

Acacia Ridge, Queensland 4110 Australia

Microchip Technology Austria GmbH

Durisolstrasse 2 / Bahnhofsplatz 1

4600 Wels

Austria

Microchip Technology (Barbados) Incorporated

Second Floor, Century Yard, P.O. Box 448GT

George Town, Grand Cayman

Cayman Islands

Microchip Technology Canada Inc. (the "Corporation")

6285 Northan Drive, Suite 108

Mississauga, ON  L4V 1X5

Canada

Microchip Technology Canada (the "Partnership")

6285 Northan Drive, Suite 108

Mississauga, ON  L4V 1X5

Canada

Microchip Technology Trading (Shanghai) Co. Ltd.

Room 2102-2107, 21st Flr., The Center

No. 989 Chang Le Road, Shanghai

P.R. China  200031

Microchip Technology Nordic ApS

Literbuen 9

2750 Skovlunde

Denmark

Microchip Technology Sarl

1 Avenue de L'Atlantique

LP 976 91976

Les Ulis Courtaboeuf

Paris, France

Microchip Technology GmbH

Osterfeldstr. 82

85737 Ismaning

Germany

Microchip Technology Hong Kong Ltd.

Suites 3707-14, 37/F, Tower 6, The Gateway

Harbour City, Kowloon, Hong Kong

Microchip Technology Hungary Kft. (abbreviated name)

(Microchip Technology Hungary Designing and Technical Consulting Limited)

Karolyi Mihaly u.9

1053 Budapest

Hungary

Microchip Technology (India) Private Limited

No. 149B

EPIP Industrial Area

1st Phase

Whitefield Bangalore 560 066

Karnataka, India

Microchip Technology Ireland Limited

Block 3.1, 1st Floor

Woodford Business Park

Northern Cross

Santry

Dublin 9 Ireland

Microchip Technology SRL

Via Pablo Picasso 41

20025

Legnano (MI)

Italy

Microchip Technology Japan K.K.

Yusen Shin Yokohama Building 10F 3-17-2

Shin Yokohama, Kohoku-Ku, Yokohama

Kanagawa 222-0033, Japan

Microchip Technology Korea Ltd.

168-1 Youngbo Bldg., 3rd Floor

Samsung-Dong, Kangham-Ku

Seoul, Korea  135-882

Arizona Microchip Technology (Malaysia) Sdn Bhd

No. 19 Nagore Road

Georgetown

10050

Penang, Malaysia

Microchip Technology Mexico, S.DE R.L. DE C.V.

Florencia 57-370

Col. Juarez

Del. Cuauhtemoc

C.P. 06600

Mexico, D.F.

Microchip Technology (Netherlands) Europe B.V.

Prins Bemhardplein 200

1097 Amsterdam

Microchip Technology (Philippines) Corporation

Unit 113 Ground Floor Tycoon Centre, Pearl Drive,

Ortigas Center, San Antonio,

Pasig City

Philippines 1605

MTI Advanced Test Development Corporation

Unit Nos. 305-309, 3F, Ayala Life-FGU Center

Acacia Avenue Cor.

Alabang-Zapote Road

Madrigal Business Park

Alabang, Muntinlupa City,

Philippines 1770

Microchip Technology SRL

4A Vasile Milea Blvd., 6th Floor, entrance B

Bucharest 6th District, Romania

Microchip Technology Singapore Pte Ltd.

200 Middle Road, #12-01 Prime Centre

Singapore 188980

Microchip Technology S.L.

calle Gobelas, 21

28023 Madrid

Spain

Microchip Technology Sweden AB

c/o Visma

Box 34212

Rålambsvägen 17, 8tr

10026 Stockholm, Sweden

Microchip Technology Switzerland S.A.

Chemin De la Venoge 7, 1025 St-Sulpice

Switzerland

Microchip Technology (Barbados) Inc., Taiwan Branch

30 F-1, No. 8,

Min Chuan 2nd Road

Kaoushiung, 806 Taiwan

Microchip Technology (Thailand) Co. Ltd.

(MTHAI)

14 Moo 1, T. Wangtakhien

A. Muang Chacherngsao

Chachemgsao 24000

Thailand

Arizona Microchip Technology (Thailand) Ltd.

(sales office)

7th Flr., Room 707, Le Concorde Building

202 Ratchadapisek Road

Bangkok 10311

Thailand

Microchip Limited

Microchip House

720 Wharfedale Road, Winnersh Triangle

Wokingham, Berkshire RG41 5TP, England

Microchip Technology Incorporated

2355 W. Chandler Blvd.

Chandler, AZ 85224

MCHP, Inc.

103 Foulk Road, Suite 280

Wilmington, DE 19803

AZ First

2355 W. Chandler Blvd.

Chandler, AZ 85224

(formerly known as Microchip Charitable Foundation)

R&E International Corporation

2490 General Armistead, Suite 200

Norristown, PA  19405

AZ1 Acquisition Corporation

2355 W. Chandler Blvd.

Chandler, AZ 85224

Sun Acquisition Corporation

Spear Street Tower

Suite 3300, 1 Market St.

San Francisco, CA 94105