user31103: Just read a post about timers and there was a timers cheat sheet posted there. It has been very helpful and I wonder if there is one for interrupts as well?
The post with the nice timer cheatsheet was this one Arduino constant clock output

user-1: Perhaps something like this (for the Arduino Uno based MPU): 

31103: <p>Just read a post about timers and there was a timers cheat sheet posted there. It has been very helpful and I wonder if there is one for interrupts as well?</p>

<p>The post with the nice timer cheatsheet was this one <a href="https://arduino.stackexchange.com/questions/16698/arduino-constant-clock-output">Arduino constant clock output</a></p>
 -1: <p>Perhaps something like this (for the Arduino Uno based MPU): <a href="https://i.stack.imgur.com/IDbCS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IDbCS.png" alt="enter image description here"></a></p>
