Arduino Micro | Arduino Official Storestore.arduino.cc › usa › arduino-micro The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit.

It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button.