The SainSmart Due has all of the features of the Arduino Due with a price that is about $10.00 less. The MCU is the Atmel SAM3X8E, which is an ARM Cortex-M3 running at 84MHz. It has 512kB flash, and 96kB RAM. The board is, like the Arduino Due, 3.3V only. Applying 5V signals to any I/O pin can, and probably will, damage the MCU. The Due is the most powerful Arduino by far, and the SainSmart Due is a faithful reproduction.
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