Datasheet

ManualsBrandsArduino ManualsArduino ControllersArduino 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 micro-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 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.

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 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.

EAGLE files: arduino-Due-reference-design.zip

Schematic: arduino-Due-schematic.pdf

Pin Mapping: SAM3X Pin Mapping page

Microcontroller

AT91SAM3X8E

Operating Voltage

3.3V

Summary of content (5 pages)

PAGE 1
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.
PAGE 2
Input Voltage (recommended) Input Voltage (limits) Digital I/O Pins Analog Input Pins Analog Outputs Pins Total DC Output Current on all I/O lines DC Current for 3.3V Pin DC Current for 5V Pin Flash Memory SRAM Clock Speed 7-12V 6-20V 54 (of which 12 provide PWM output) 12 2 (DAC) 130 mA 800 mA 800 mA 512 KB all available for the user applications 96 KB (two banks: 64KB and 32KB) 84 MHz The Arduino Due can be powered via the USB connector or with an external power supply.
PAGE 3
Digital I/O: pins from 0 to 53 Each of the 54 digital pins on the Due can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 3.3 volts. Each pin can provide (source) a current of 3 mA or 15 mA, depending on the pin, or receive (sink) a current of 6 mA or 9 mA, depending on the pin. They also have an internal pull-up resistor (disconnected by default) of 100 KOhm.
PAGE 4
The Arduino Due has a number of facilities for communicating with a computer, another Arduino or other microcontrollers, and different devices like phones, tablets, cameras and so on. The SAM3X provides one hardware UART and three hardware USARTs for TTL (3.3V) serial communication. The Programming port is connected to an ATmega16U2, which provides a virtual COM port to software on a connected computer (To recognize the device, Windows machines will need a .
PAGE 5
jack) to your computer. The programming port uses the 16U2 as a USB-to-serial chip connected to the first UART of the SAM3X (RX0 and TX0). The 16U2 has two pins connected to the Reset and Erase pins of the SAM3X. Opening and closing the Programming port connected at 1200bps triggers a “hard erase” procedure of the SAM3X chip, activating the Erase and Reset pins on the SAM3X before communicating with the UART. This is the recommended port for programming the Due.