Arduino Mega 2560 R3 [ORIGINAL] - (AD1274)

Description:

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 16MHz crystal oscillator, USB connection, power jack, ICSP header, and a reset button. It contains everything needed; simply connect it to a PC via a USB cable or power it with an AC/DC adapter or a battery to turn it on. The Mega is compatible with more shields designed for Arduino Duemilanove or Diecimila.

Specifications:

• Microcontroller ATmega2560
• Operating Voltage: 5 V
• Input Voltage (recommended): 7-12 V
• Input Voltage (limits): 6-20 V
• 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 3.3 V Pin: 50 mA
• Flash Memory: 256 KB, of which 8 KB are used by the bootloader
• SRAM: 8 KB
• EEPROM: 4 KB
• Clock Speed: 16 MHz

Reference link