ATmega16U4 datasheet(407/408 Pages) ATMEL

407 / 408 page

407

7766D–AVR–01/09

ATmega16U4/ATmega32U4

Electrical Characteristics .................................................................... 380

29.1 Absolute Maximum Ratings* ..............................................................................380

29.2 DC Characteristics ..............................................................................................380

29.3 External Clock Drive Waveforms ........................................................................382

29.4 External Clock Drive ...........................................................................................382

29.5 Maximum speed vs. V

CC ............................................................................................................................382

29.6 2-wire Serial Interface Characteristics ................................................................383

29.7 SPI Timing Characteristics .................................................................................385

29.8 Hardware Boot EntranceTiming Characteristics .................................................386

Instruction Set Summary ..................................................................... 392

Ordering Information ........................................................................... 395

32.1 ATmega16U4 .....................................................................................................395

32.2 ATmega32U4 .....................................................................................................396

Packaging Information ........................................................................ 397

33.1 TQFP44 ..............................................................................................................397

33.2 QFN44 ................................................................................................................398

Errata ..................................................................................................... 399

34.1 ATmega16U4/ATmega32U4 Rev A ...................................................................399

Datasheet Revision History for ATmega16U4/ATmega32U4 ........... 400

35.1 Rev. 7766D – 01/09 ............................................................................................400

35.2 Rev. 7766C – 11/08 ............................................................................................400

35.3 Rev. 7766B – 11/08 ............................................................................................400

35.4 Rev. 7766A – 07/08 ............................................................................................400

ATmega16U4 Datasheet(PDF) 407 Page - ATMEL Corporation