The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable.
Compatible with most Arduino shields.

Features

• Treated as an original Arduino Mega by the Arduino IDE. No messing around with extra libraries.
• Includes USB cable for easy connection to your PC
• 100% Arduino Mega compatible, identical layout and construction.
• ATMega16U2 on board
• 1 year Altronics warranty.

Specifications

• Microcontroller: ATmega2560
• Operating Voltage: 5V
• Input Voltage (recommended): 7-12V
• Input Voltage (limits): 6-20V
• Digital I/O Pins: 54 (of which 14 provide PWM output)
• Analog Input Pins: 16
• DC Current per I/O Pin: 40 mA
• DC Current for 3.3V Pin: 50 mA
• Flash Memory: 256 KB of which 4 KB used by boot loader
• SRAM: 8 KB
• EEPROM: 4 KB
• Clock Speed: 16MHz