Summary datasheet for the ATmega164, ATmega324 and ATmega644 family of AVR microcontrollers, a compact 297 KB PDF. The trailing s in the name marks the short edition, which normally lists features, pin configurations, ordering codes and package outlines but omits detailed register chapters. It is handy for quickly checking pin functions or package type on a board under repair; for programming details, fuse bits or timing figures, refer to the full datasheet of the same family instead.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet. Enginerys does not host this file.
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