Controller Atmega16u2

Input Voltage 7-12V

Digital IO pins 54 (of which 15 provide PWM output)

Analog input pins 16

DC Current per I/O Pin 40 mA

SRAM 16 KB

Clock Speed 16 MHz

Operating voltage 5V

DC Current for 3.3V Pin 50 mA

Flash Memory 256 KB of which 8 KB used by bootloader