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can you use the microcontroller of the arduino mega in the decimilla or Duemilanove?

i havnt had a chance to see the microcontroller for the mega but im pretty sure its the same size and pin number of the decimilla and Duemilanove

frollard7 years ago
The mega uses a surface mount chip with 2-3 times as many pins. It can't be direct swapped You can swap easily between the atmega168 and atmega328 (so long as they're burned with the correct bootloader)
http://arduino.cc/en/Main/ArduinoBoardMega
54 digital io, 14 with hardware pwm...

http://arduino.cc/en/Main/HomePage
28 DIP package...3pwm

not compatible.