Arduino Due development board Arduino Due

The Arduino Due is a development board based on the Atmel SAM3X8E ARM Cortex-M3 microcontroller running at 84 MHz. It is the first Arduino board with a 32-bit ARM core and offers 512 KB of flash memory and 96 KB of SRAM. The board operates at 3.3 V, accepts up to 16 V on the power input, measures 101.52 x 53.3 mm and weighs 36 g. It includes the necessary connectors and circuitry to start development by connecting a micro-USB cable, an AC-to-DC adapter, or a battery.

Advantages

The Arduino Due provides a 32-bit processor for higher performance compared with 8-bit Arduino boards, ample memory for larger programs, multiple hardware serial ports and a wide set of I/O including 54 digital pins, 12 analog inputs and 2 DAC outputs. Its USB OTG capability and standard 1.0 pinout make it compatible with shields designed for 3.3 V operation.

Suitable for

• Complex embedded projects requiring a 32-bit MCU and more RAM/flash
• Applications needing multiple serial interfaces or USB OTG
• Signal generation and audio projects using DAC outputs
• Prototyping with 3.3 V Arduino shields compliant with the 1.0 pinout

Key specifications

• Microcontroller: Atmel SAM3X8E ARM Cortex-M3
• Clock speed: 84 MHz
• Flash memory: 512 KB
• SRAM: 96 KB
• Digital I/O: 54 pins (12 PWM capable)
• Analog inputs: 12
• DAC outputs: 2
• Hardware UARTs: 4
• Interfaces: USB OTG, SPI header, JTAG header, 2 TWI
• Operating voltage: 3.3 V (I/O max 3.3 V)
• Power input max: 16 V
• Dimensions: 101.52 x 53.3 mm; Weight: 36 g

How to use

Connect the Arduino Due to a computer using a micro-USB cable to program and power the board, or feed it with an AC-to-DC adapter or a suitable battery to power standalone projects. Use the Arduino IDE or compatible development tools to compile and upload sketches. Attach shields and peripherals that operate at 3.3 V and follow the 1.0 pinout: locate SDA/SCL near AREF for TWI and respect the IOREF pin for shield voltage negotiation. Do not apply voltages above 3.3 V to I/O pins.

Recommendations

Ensure all connected shields and external circuits are 3.3 V tolerant. Use level shifters when interfacing with 5 V devices and observe the maximum I/O voltage to avoid damaging the board.