When reading a port for a 8 bit serial input, in general, how am I suppose to tell how much time I need to allow for switching other than experimentation? Is it a function of time or is it a function of how many clock cycles I need to let pass before I read the port? Is the limiting factor the device I need to read the data from?
Do I just need to use a oscilliscope to see how many us it takes for a switch?
Do I just need to use a oscilliscope to see how many us it takes for a switch?