Datasheet

29.2. DC Characteristics....................................................................................................................395
29.3. Speed Grades.......................................................................................................................... 398
29.4. Clock Characteristics................................................................................................................398
29.5. System and Reset Characteristics........................................................................................... 399
29.6. External interrupts characteristics............................................................................................ 400
29.7. SPI Timing Characteristics....................................................................................................... 401
29.8. Two-wire Serial Interface Characteristics................................................................................. 402
29.9. ADC characteristics..................................................................................................................404
29.10. Parallel Programming Characteristics......................................................................................408
30. Typical Characteristics...........................................................................................410
30.1. Active Supply Current...............................................................................................................410
30.2. Idle Supply Current...................................................................................................................412
30.3. Supply Current of I/O Modules................................................................................................. 414
30.4. Power-down Supply Current.....................................................................................................415
30.5. Power-save Supply Current......................................................................................................416
30.6. Standby Supply Current........................................................................................................... 417
30.7. Pin Pull-Up................................................................................................................................417
30.8. Pin Driver Strength................................................................................................................... 420
30.9. Pin Threshold and Hysteresis...................................................................................................422
30.10. BOD Threshold........................................................................................................................ 424
30.11. Internal Oscillator Speed.......................................................................................................... 426
30.12. Current Consumption of Peripheral Units................................................................................ 428
30.13. Current Consumption in Reset and Reset Pulse Width........................................................... 431
31. Register Summary.................................................................................................432
32. Instruction Set Summary....................................................................................... 436
33. Packaging Information...........................................................................................441
33.1. 40-pin PDIP.............................................................................................................................. 441
33.2. 44-pin TQFP.............................................................................................................................442
33.3. 44-pin VQFN.............................................................................................................................443
34. Datasheet Revision History................................................................................... 444
34.1. Rev. C – 10/2016......................................................................................................................444
34.2. Rev. B – 08/2016...................................................................................................................... 444
34.3. Rev. A – 05/2016...................................................................................................................... 444
35. Errata.....................................................................................................................445
35.1. Rev. F....................................................................................................................................... 445
Atmel ATmega644PA [DATASHEET]
Atmel-42717C-ATmega644PA_Datasheet_Complete-10/2016
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