Description MicrocontrollerATmega2560Operating Voltage5VInput Voltage (Recommended)7-12VInput Voltage (Limit)6-20VDigital I/O Pins54 (of which 15 provide PWM output)Analog Input Pins16DC Current Per I/O Pin20 mADC Current for 3.3V Pin50 mAFlash Memory256 KB of which 8 KB used by bootloaderSRAM8 KBEEPROM4 KBClock Speed16 MHzSize101.52 X 53.3 mmD/CPCRCS02 Arduino Mega2560 is fitted with the ATMEGA16U2 chip which is an open source program. The power source is selected automatically either from USB connection or external power supply. The ATmega2560 has 256 KB of flash memory for storing code . It contains automatic reset software inbuilt with stronger reset circuit.