The Arduino DUE is a microcontroller board based on the 32-bit Atmel SAM3X8E ARM Cortex-M3 CPU. The board features 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), an 84 Mhz clock, a USB OTG connection, a power jack , an SPI header, a JTAG header, a reset button, and an erase button.
NOTE: the DUE operates at 3.3V. The maximum voltage on the I/O pins is therefore 3.3V. Higher voltages can damage the board.