Datasheet

35.1ATmega16U4/ATmega32U4 Rev E ....................................................................419
35.2ATmega16U4/ATmega32U4 Rev D ....................................................................419
35.3ATmega16U4/ATmega32U4 Rev C ....................................................................420
35.4ATmega16U4/ATmega32U4 Rev B ....................................................................420
35.5ATmega16U4/ATmega32U4 Rev A ....................................................................421
36 Datasheet Revision History for ATmega16U4/ATmega32U4 ........... 423
36.1Rev. 7766F – 11/10 .............................................................................................423
36.2Rev. 7766E – 04/10 .............................................................................................423
36.3Rev. 7766D – 01/09 ............................................................................................423
36.4Rev. 7766C – 11/08 ............................................................................................424
36.5Rev. 7766B – 11/08 .............................................................................................424
36.6Rev. 7766A – 07/08 .............................................................................................424