The Arduino Pro Micro ATmega32U4 is a version of the Arduino Leonardo with particularly small dimensions. It uses the ATmega32U4 microcontroller that has the same amount of Flash and RAM as the ATmega328 used by Arduino Uno.
It has 4 10-bit ADC, 5 pin PWM, 12 pin I / O serial hardware connections Rx and Tx, 5V power supply and 16MHz clock. Arduino Pro Micro ATmega32U4 may appear to the connected computer as a mouse or a keyboard.
Supply voltage: 5 V to 12 V
Microcontroller: ATMEGA32U4 16 MHz
20-channel PWM 5 I / O Pin 5
Number of analog inputs: 12 Serial
Interfaces: UART, SPI, I2C
Mini USB connector for programming
Dimensions: 33 x 18 mm
Equipped with an ATMEL AVR Atmega32u4 controller with integrated USB flash drive.