Thought I try some DUE overclocking just for the fun of it :slight_smile: So I tried some different PLL MUL/DIV settings. It seem that 120MHz is max what the SAM3X8E Cortex M3 chip will run. This is not because of the flash read speed but because of the internal SRAM and that has no waitstate set…

Overclocking the Arduino DUE

ard_newbie October 13, 2018, 2:20pm 10

What PWM frequency and duty cycle would you need ?

FYI, with PMC_PCKx registers, you can output square signales up to 240 MHz ( see page 529, Sam3x datasheet).

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