The Arduino Micro without headers is the smallest board of the family designed for easy integration into everyday objects to make them interactive It is based on the ATmega32U4 microcontroller with built-in USB support allowing it to be recognized as a mouse or keyboard The board features 20 digital input/output pins with 7 available as PWM outputs and 12 as analog inputs It includes a 16 MHz crystal oscillator micro USB connection an ICSP header and a reset button Simply connect it to a computer with a micro USB cable to get started The form factor allows easy placement on a breadboard The Arduino Micro is similar to the Arduino Leonardo with the ATmega32U4 offering built-in USB communication eliminating the need for a secondary processor It appears as a mouse keyboard or virtual serial port on a connected computer SRAM 2.5 KB ATmega32U4
EEPROM 1 KB ATmega32U4
Clock Speed 16 MHz