Using the ADCIN command allows for the use of an analog signal to the microcontroller. Looking at the example code on the webpage the whole PORTA is set as analog inputs. Is this because each I/O pin holds a bit? And if so which pin do you wire the input analog signal to? Also since I am measuring an analog signal that will range from 0-5V how many bits do I need to set the ADC to when all I want to do is measure if it is above 0V?

Thanks,
Michael