Mega 2560 official module ATMEGA16U2

Model: YZQ-B004
Controller:Atmega16u2
Input Voltage (recommended):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
Input Voltage (limits):6-20V
PWM channel:15

 

Controller Atmega16u2
Input Voltage (recommended) 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
Input Voltage (limits) 6-20V
PWM channel 15
Flash Memory 256 KB of which 8 KB used by bootloader