Quote Originally Posted by Heckler View Post
The datasheet for the 12f683 shows that it has an internal Fixed Voltage Reference that can be used to compare against the supply voltage.
hi, Dwight,

not really a reference for the 683 ...


- Programmable on-chip voltage reference
(CVREF) module (% of VDD)
so, here it is not possible to reach the goal ...

Alain