Hi all, I have a pic16F1782 and the ADC conversion result can be supplied in 2 formats, either magnitude or 2's compliment.

Both formats show the decimal range for -4096 to 4096 and their equivalent binary representations. The pic also has the option of differential analog inputs so does this mean I can have a Vref+ of 5V and a Vref- of GND but able to process a negative differential input i.e 0V - 5V = -5V = -4096?

 

Hello,

The result of the conversion represents the difference between the positive and negative input channels.
For the allowed voltage input levels, see the chapter 30.0 from the DS.
Check also the AN842.

Regards,
simozz

 

it's all in that pic manual and clear explained.

Picbuster