Get Atmega328P Pinout Arduino Uno Photos. It has total 28 pins out of which some are gpio (general purpose input / output) pins and some are power pins. In contrast, pin change interrupts can be activated on any of the pins.

Arduino Uno R3 Con Atmega328p Dispositivos De Radio Mejorados Arduino Board Arduino Arduino Programming
Arduino Uno R3 Con Atmega328p Dispositivos De Radio Mejorados Arduino Board Arduino Arduino Programming from i.pinimg.com
There are two external interrupt pins on the atmega168/328 called int0 and int1. In contrast, pin change interrupts can be activated on any of the pins. We will describe functions of each pin in since atmega328p is used in arduino uno and arduino nano boards, you can directly replace the arduino board with atmega328 chip.

There are two external interrupt pins on the atmega168/328 called int0 and int1.

Both int0 and int1 are mapped to pins 2 and 3. There are two external interrupt pins on the atmega168/328 called int0 and int1. Atmega 328 microcontroller is an eight bit microcontroller based on the risc (reduced instruction set computing) architecture. We will describe functions of each pin in since atmega328p is used in arduino uno and arduino nano boards, you can directly replace the arduino board with atmega328 chip.