Arduino.org Due Microcontroller Board
Arduino.org Due Microcontroller Board is based on the 32-bit processor Atmel SAM3X8E ARM Cortex-M3 MCU, and improves all the standard Arduino.org functionalities and adds many new features.
The Arduino.org Due offers 54 digital input/output pins (of which 12 can be used as PWM outputs, with selectable resolution), 12 analog inputs with 12 bits of resolution, 4 UARTs, two DAC outputs, an 84MHz crystal oscillator, two USB connections, 2 TWI, a power jack, an ICSP header, an SPI header, a JTAG header, and a reset button and erase button. The maximum voltage that the I/O pins can provide or tolerate is 3.3V. The board has two micro USB connectors--one for debugging purposes and a second one capable of acting as a USB host, allowing external USB peripherals such as mouse, keyboards, smartphones, etc. to be connected to the Arduino.org Due.
The board 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 Due is compatible with all Arduino shields that work at 3.3V and are compliant with the 1.0 Arduino.org pinout.
Learn More About Open Source Hardware