DUE Board for Arduino DUE Project
The Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU. It is the first 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, a USB OTG capable connection, 2 DAC (digital to analog converters), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button. The Due is compliant with the Arduino 1.0 pinout; it has SDA and SCL pins near the AREF pin and an IOREF pin, which can be used by shields to detect the microcontroller board voltage.

• Microcontroller: AT91SAM3X8E
• Operating voltage: 3.3 V
• Input voltage (recommended): 7-12 V
• Input voltage (limits): 6-20 V
• Digital I/O pins : 54 (of which 12 provide PWM output)
• Analog input pins: 12
• Analog outputs pins (DAC): 2
• 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 application
• SRAM : 96 KB (two banks: 64 KB and 32 KB)
• Clock speed: 84 MHz.