Arduino MEGA 2560 R3
The Arduino Mega 2560 is a microcontroller board based on the ATmega2560 (datasheet). 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 or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila. Main Changes: 1. TWI interface and the IOREF in the top and bottom connectors.This change keeps the board 100% compatible with the current boards and shields, but adds possibilities for new shields. 2. Larger heatsinking copper area for the LM117 regulator 3. Uses an Atmega16U2 instead of the Atmega8U2 on the previous version. Opens up more possibilities for USB apps! Features: * Microcontroller: ATmega2560 * Operating Voltage: 5V * Input Voltage: 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 8 KB used by bootloader * SRAM: 8 KB * EEPROM: 4 KB * Clock Speed: 16 MHz