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Green rectangular microcontroller board with numerous pin headers and USB port

sayal

sayal Arduino Due microcontroller board 3.3V 84 MHz 54 I/O 12 analog 12 PWM 4 UART 2 DAC 2 TWI

SKU CH-6NM3-REC76

A 32-bit ARM Cortex-M3 microcontroller board running at 84 MHz with 54 digital I/O, 12 analog inputs, 12 PWM outputs, 4 UARTs, 2 DACs and 2 TWI interfaces

  • TypeScience & Discovery
  • 32-bit ARM core enables advanced 3.3V projects
  • 84 MHz clock speeds up complex calculations
  • 54 digital I/O pins connect many components
  • 12 analog inputs capture precise sensor data
  • 2 DAC channels output true analog signals

32-bit ARM microcontroller for advanced projects

The Arduino Due is a microcontroller board built around the Atmel SAM3X8E ARM Cortex-M3 CPU running at 84 MHz. It provides 54 digital input/output pins with 12 PWM outputs, 12 analog inputs, 4 UARTs, 2 DAC channels and 2 TWI interfaces. The board operates at 3.3V and includes USB OTG connectivity for direct device communication.

Step up from 8-bit boards when you need more speed

This board replaces 8-bit Arduino models when a project demands a 32-bit core, higher clock frequency and larger pin count. The jump is worth it for applications requiring simultaneous serial ports, true analog output via DAC or native USB host capability. Existing 5V shields will not work without level shifting due to the 3.3V logic limit.

Verify shield voltage

Check that any shield you plan to use is rated for 3.3V operation and follows the 1.0 pinout with TWI pins near the AREF pin and an IOREF pin for voltage adaptation. Confirm your power source can supply the board via microUSB, the power jack or battery. Ensure no external signals exceed 3.3V on any I/O pin to avoid damage.

Highlights

  • 32-bit ARM core enables advanced 3.3V projects
  • 84 MHz clock speeds up complex calculations
  • 54 digital I/O pins connect many components
  • 12 analog inputs capture precise sensor data
  • 2 DAC channels output true analog signals

Specifications

TypeScience & Discovery

Questions about this item

What board dimensions and pinout standard must a shield match to fit this Due?

The board follows the Arduino 1.0 pinout, so any shield compliant with that 1.0 layout will align with its headers.

Which step do builders often miss when powering the board for the first time?

They forget to supply 3.3 V via the micro-USB, the power jack, or a battery, and they apply 5 V signals to the I/O pins, which can damage the SAM3X8E.

Which on-board component is most likely to need replacement after heavy prototyping?

The SAM3X8E microcontroller itself; its I/O pins tolerate only 3.3 V, so accidental over-voltage is the common failure mode.

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