Arduino Due R3 Development Board with SAM3X8E ARM Cortex-M3 Microcontroller

Arduino Due R3 Development Board with SAM3X8E ARM Cortex-M3 Microcontroller
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Tags: Arduino Due, Arduino Due R3, SAM3X8E, ARM Cortex-M3, 32-bit Arduino, Arduino Due DAC, Arduino Due CAN, Arduino Due 84MHz, 54 digital pins Arduino, Arduino Due board

The Arduino DUE R3 is a high-performance development board built around the Microchip (Atmel) SAM3X8E ARM Cortex-M3 microcontroller, marking Arduino’s first entry into 32-bit ARM architecture. The processor runs at 84MHz and provides 512KB of flash memory and 96KB of SRAM, offering substantially more computing power and memory than 8-bit Arduino boards. This makes the board well suited to demanding applications such as CNC machines, audio signal processing, multi-serial communication systems, and data-intensive control tasks.

The board exposes 54 digital input/output pins, 12 of which support PWM output, along with 12 analog inputs and 2 true analog outputs (DAC). It includes 4 hardware UARTs, 2 TWI (I2C) interfaces, an SPI header, a JTAG header, a USB-OTG capable connection, a power jack, a reset button, and an erase button. The USB-OTG interface allows the board to act as either a USB host or a USB device, enabling peripherals such as mice and keyboards to be connected directly. The DAC outputs provide genuine analog voltage generation, a capability not available on standard 8-bit Arduino boards.

The Arduino Due 84MHz microcontroller operates at 3.3V logic. This is a critical distinction: the I/O pins cannot tolerate 5V, and applying 5V to any I/O pin can permanently damage the board. The board is compatible with Arduino shields that are designed for 3.3V operation and follow the 1.0 Arduino pinout. Input voltage is recommended at 7V to 12V, with a rated limit of 6V to 16V. The board measures approximately 101.52mm × 53.3mm and weighs about 36 grams, maintaining the standard Arduino form factor for shield compatibility.

Typical applications for the Arduino_DUE_R3 include high-performance control systems, audio and signal generation, multi-serial communication hubs, USB host projects, environmental monitoring, and IoT prototypes that require more processing headroom than 8-bit platforms can provide.

Arduino Due 84MHz microcontroller Application

  1. High-performance control systems and automation
  2. CNC machines and motion-control projects
  3. Audio generation and signal processing via DAC
  4. Multi-serial communication hubs
  5. USB host and USB device projects
  6. Environmental monitoring and IoT prototypes
  7. Data-intensive Arduino projects
  8. Educational and research platforms for 32-bit ARM development

Arduino Due 84MHz microcontroller Specifications

  1. Product Model: Arduino_DUE_R3
  2. Manufacturer: Arduino
  3. Microcontroller: AT91SAM3X8E (Microchip/Atmel)
  4. Processor Core: ARM Cortex-M3, 32-bit
  5. Clock Speed: 84 MHz
  6. Operating Voltage (Logic): 3.3V DC
  7. Input Voltage (Recommended): 7V to 12V DC
  8. Input Voltage (Limits): 6V to 16V DC
  9. Digital I/O Pins: 54
  10. PWM Outputs: 12 (of the 54 digital pins)
  11. Analog Input Pins: 12
  12. Analog Output Pins (DAC): 2
  13. Flash Memory: 512 KB
  14. SRAM: 96 KB (64 KB + 32 KB banks)
  15. Hardware UARTs: 4
  16. TWI (I2C) Interfaces: 2
  17. SPI Header: 1
  18. JTAG Header: 1
  19. USB Interface: USB-OTG capable
  20. DC Current for 3.3V Pin: 800 mA
  21. DC Current for 5V Pin: 800 mA
  22. Total DC Output Current (All I/O Lines): 130 mA
  23. Board Dimensions: 101.52 mm × 53.3 mm
  24. Weight: Approximately 36 g
  25. Shield Compatibility: 3.3V Arduino shields, 1.0 Arduino pinout

Features

  1. 32-bit ARM Cortex-M3 microcontroller at 84MHz for high-performance applications
  2. 512KB flash memory and 96KB SRAM for complex programs
  3. 54 digital I/O pins, including 12 PWM-capable outputs
  4. 12 analog inputs with 12-bit ADC resolution
  5. 2 true analog outputs (DAC) for audio and signal generation
  6. 4 hardware UARTs for multi-serial communication
  7. USB-OTG capable connection for USB host or device operation
  8. 2 TWI (I2C) interfaces and SPI/JTAG headers for expansion
  9. 3.3V logic operation — I/O pins are not 5V tolerant
  10. Compatible with 3.3V Arduino shields and the 1.0 Arduino pinout
  11. Standard Arduino form factor measuring 101.52mm × 53.3mm
  12. Barrel jack power input with a recommended range of 7V to 12V
  13. 800mA available on both the 3.3V and 5V power pins
  14. 130mA total DC output current across all I/O lines
Electrical Parameters
Input Voltage (recommended) 7-9 V Max
Microcontroller AT91SAM3X8E
Operating Voltage 3.3V
Board Parameters
Clock Speed 84 MHz
FLASH 512 KB all available for the user applications
SRAM 96 KB
Physical Parameters
Size 101.52 mm x 53.3 mm

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