Download Atmega328Pb Arduino Pinout Photos. Both int0 and int1 are mapped to pins 2 and 3. Atmega 328 microcontroller is an eight bit microcontroller based on the risc (reduced instruction set computing) architecture.

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Pololu A Star 32u4 User S Guide from a.pololu-files.com
For those of you who are using an atmega328 with the arduino bootloader code on your own circuit board here is the pinout details which shows the chip pin numbers and the associated arduino pins. The nano is inbuilt with the atmega328p microcontroller, same as the arduino uno. It is the most popular of all avr controllers as it is used in arduino boards.

In contrast, pin change interrupts can be activated on any of the pins.

For those of you who are using an atmega328 with the arduino bootloader code on your own circuit board here is the pinout details which shows the chip pin numbers and the associated arduino pins. The nano is inbuilt with the atmega328p microcontroller, same as the arduino uno. Both int0 and int1 are mapped to pins 2 and 3. Port d has pins d0 to d7.