The Arduino Micro is a microcontroller board based on the ATmega32u4, 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 16MHz 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 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. It also has other implications for the behavior of the board.
- ATmega32u4 microcontroller
- Operating Voltage 5V
- Input Voltage 7 to 12V
- Digital I/O Pins 20 (of which 7 provide PWM output)
- Analog Input Pins 12
- DC Current per I/O Pin 40mA
- DC Current for 3.3V Pin 50mA
- Flash Memory 32 KB (of which 4 KB used by bootloader)
- SRAM 2.5 KB
- EEPROM 1 KB
- Clock Speed 16MHz
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