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. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard.
The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.
Technical Specifications
Model
MICRO
MICROCONTROLLER
ATmega32U4
OPERATING VOLTAGE
5V
INPUT VOLTAGE (RECOMMENDED)
7-12V
DIGITAL I/O PINS
20
PWM CHANNELS
7
ANALOG INPUT CHANNELS
12
DC CURRENT PER I/O PIN
20 mA
DC CURRENT FOR 3.3V PIN
50 mA
FLASH MEMORY
32 KB (ATmega32U4) of which 4 KB used by bootloader
