Step 1: Reset Circuit

Start of hack day project

Goal: There must be a circuit that will reset the CPU when the power comes up and de-bounce the reset button.

For whatever reason when I picked up the bits, MAX707’s was a cheap microprocessor supervisor device that was available. It’ll send a reset pulse, it’s got an input for a button that it’ll debounce, it can send a brownout warning if you configure it right, and it’s got both inverted and regular RESET rails.

I used a USB breakout adapter to drive the 5v rails.