Exhibit 21.1 ATMEL CORPORATION SUBSIDIARIES OF REGISTRANT The following are the subsidiaries of the Registrant: Atmel Asia Limited, a Hong Kong corporation Atmel ES2 B.V., a Netherlands corporation Atmel Finance Inc., a United States corporation Atmel (OY) Finland, a Finnish corporation Atmel FSC, Inc. a Barbadian corporation Atmel GmbH, a German corporation Atmel Japan K.K., a Japanese corporation Atmel Korea Limited, a Korean corporation Atmel SARL, a French corporation Atmel Semiconductor Corporation, a United States corporation Atmel Singapore Pte. Limited, a Singaporean corporation Atmel Taiwan Limited, a Taiwanese corporation Atmel U.K. Limited, a United Kingdom corporation