Arduino Micro

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 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. Specifications : Microcontroller : ATmega32u4 Operating Voltage : 5V Input Voltage (recommended) : 7-12V Input Voltage (limits) : 6-20V Digital I/O Pins : 20 PWM Channels : 7 Analog Input Channels : 12 DC Current per I/O Pin : 40 mA DC Current for 3.3V Pin : 50 mA Flash Memory : 32 KB (ATmega32u4) of which 4 KB used by bootloader SRAM : 2.5 KB (ATmega32u4) EEPROM : 1 KB (ATmega32u4) Clock Speed : 16 MHz