The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU. It is the first Arduino board based on a 32-bit ARM core microcontroller. It has 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button. Warning: Unlike most Arduino boards, the Arduino Due board runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage the board. It has 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button. Warning: Unlike most Arduino boards, the Arduino Due board runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage the board. AVR Arduino microcontroller | Microcontroller | AT91SAM3X8E Operating Voltage | 3.3V Input Voltage (recommended) | 7-12V Input Voltage (limits) | 6-16V Digital I/O Pins | 54 (of which 12 provide PWM output) Analog Input Pins | 12 Analog Output Pins | 2 (DAC) Total DC Output Current on all I/O lines | 130 mA DC Current for 3.3V Pin | 800 mA DC Current for 5V Pin | 800 mA Flash Memory | 512 KB all available for the user applications SRAM | 96 KB (two banks: 64KB and 32KB) Clock Speed | 84 MHz Length | 101.52 mm Width | 53.3 mm Weight | 36 g