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Arduino DUE

View A000062: DUE Twi: SDA and SCL Pins that are Near to the Aref Pin

A000062: DUE Twi: SDA and SCL Pins that are Near to the Aref Pin

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Arduino
Jameco Part no. 2170222
Manufacturer ARDUINO
Manufacturer no. A000062
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Arduino DUE


The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU (datasheet). 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 other Arduino boards, the Arduino Due board runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Providing higher voltages, like 5V to an I/O pin could damage the board.

The board contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable (USB Type-A to USB micro-A) or power it with a AC-to-DC adapter (with 2.1mm center-positive connector) or battery to get started. Please refer to the datasheet for complete specifications and usage. The Due is compatible with all Arduino shields that work at 3.3V and are compliant with the 1.0 Arduino pinout.

The Due follows the 1.0 pinout:

  • TWI: SDA and SCL pins that are near to the AREF pin.
  • The IOREF pin which allows an attached shield with the proper configuration to adapt to the voltage provided by the board. This enables shield compatibility with a 3.3V board like the Due and AVR-based boards which operate at 5V.
  • An unconnected pin, reserved for future use.

    The Due has a dedicated forum for discussing the board.

    ARM Core benefits

    The Due has a 32-bit ARM core that can outperform typical 8-bit microcontroller boards. The most significant differences are:

  • A 32-bit core, that allows operations on 4 bytes wide data within a single CPU clock. (for more information look at int type page).
  • CPU Clock at 84Mhz.
  • 96 KBytes of SRAM.
  • 512 KBytes of Flash memory for code.
  • a DMA controller, that can relieve the CPU from doing memory intensive tasks.

    Specifications

  • Microcontroller: AT91SAM3X8E
  • Operating Voltage: 3.3V
  • Input Voltage (recommended): 7-12V
  • Input Voltage (limits): 6-20V
  • Digital I/O Pins: 54 (of which 12 provide PWM output)
  • Analog Input Pins: 12
  • Analog Outputs 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

    Resources & Downloads

  • EAGLE files: arduino-Due-reference-design.zip
  • Schematic: arduino-Due-schematic.pdf
  • Pin Mapping: SAM3X Pin Mapping page



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