Smart Electronics DUE R3 Development Board ARM32-bit Master Control Immersion Gold Technology Development Board Module

Feature
processor: at91sam3x8ea working voltage: 3.3v input voltage: 7-12v input voltage (limit): 6-20v digital i/o ports: 54 (12 pwm outputs) analog input pins: 12 analog output pin: 2 (digital to analog conversion) header i/o port dc output total current: 130ma 3.3v power pin can provide 800 ma current 5v power pin can provide 800 ma current internal flash memory capacity: 512kb sram96 kb (two banks: 64kb and 32kb) clock frequency: 84 mhz

Overview

Alxduino Due is a microcontroller board based on Atmel SAM3X8E CPU.
It is an Alxduino based on 32-bit ARM core. It has 54 digital IO ports
(12 of which can be used for PWM output), 12 analog input ports, 4 channels
UART hardware serial port, 84 MHz clock frequency, one USB OTG interface,
two DACs (analog to digital conversion), two TWIs, one power socket,
one SPI interface, one JTAG interface, one reset button and one erase button.

Warning 
Different from other Alxduino, the working voltage of Alxduino due is 3.3V.
The IO port can carry a voltage of 3.3V. If you use a larger voltage, such as 5V to an IO port,
you may burn the chip.

The circuit board already contains various components required for control operation.
You only need to connect to the computer via USB or connect to the power socket via
an AC-DC adapter and battery to start the controller. Alxduino due is compatible with
the Alxduino expansion board that works at 3.3V and the pin arrangement conforms to
the 1.0 Alxduino standard.

Advantages of ARM core

The Due using 32-bit ARM core is more powerful than other Alxduino using 8-bit AVR core in the past.
The obvious differences are:

The 32-bit core can process 32-bit data in one clock;

84Mhz CPU clock frequency;

96 KBytes of SRAM;

512 KBytes Flash;

A DMA controller, it can reduce the pressure of the CPU when doing a lot of calculations.