What happens when the RESET pin is set to High volt

I know that pulling and keeping the RESET pin Low has the following use:

  • Enable the ICSP programming mode on AVR
  • Reset the registers once released

What does pulling the RESET high do?

What does pulling the RESET high do?

The processor runs normally. :wink:

There is a pull-up resistor that pulls Reset high when the reset button is not pressed or otherwise pulled down. When you press the button you “overpower” the pull-up resistor and current flows through the resistor.

Of course, pulling RESET to 12 V - if that is what you mean by "High volt" - will put the processor into Parallel Programming mode, used to program the main memory flash. Secton 28.7 of the datasheet.