Datasheet

29.2. DC Characteristics....................................................................................................................395
29.3. Speed Grades.......................................................................................................................... 397
29.4. Clock Characteristics................................................................................................................398
29.5. System and Reset Characteristics........................................................................................... 399
29.6. External interrupts characteristics............................................................................................ 400
29.7. SPI Timing Characteristics....................................................................................................... 400
29.8. Two-wire Serial Interface Characteristics................................................................................. 401
29.9. ADC characteristics..................................................................................................................403
29.10. Parallel Programming Characteristics......................................................................................407
30. Typical Characteristics...........................................................................................409
30.1. Active Supply Current...............................................................................................................409
30.2. Idle Supply Current...................................................................................................................411
30.3. Supply Current of I/O Modules................................................................................................. 413
30.4. Power-down Supply Current.....................................................................................................414
30.5. Power-save Supply Current......................................................................................................415
30.6. Standby Supply Current........................................................................................................... 416
30.7. Pin Pull-Up................................................................................................................................416
30.8. Pin Driver Strength................................................................................................................... 419
30.9. Pin Threshold and Hysteresis...................................................................................................421
30.10. BOD Threshold........................................................................................................................ 423
30.11. Internal Oscillator Speed.......................................................................................................... 425
30.12. Current Consumption of Peripheral Units................................................................................ 427
30.13. Current Consumption in Reset and Reset Pulse Width........................................................... 430
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 ATmega644A [DATASHEET]
Atmel-42716C-ATmega644A_Datasheet_Complete-10/2016
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