I am thinking of programming a PIC MCU for my application as it uses 3V supply which can be power up with 2xAAA batteries. I am using Keil C programmer as it was supplied by my lab and therefore would like to know any user of PIC had already written the assoicated SFR in a <PIC.h> file. Is it possible to provide me with this file as I am totally new to PIC. Should you have a simple interrupt enabled routine and go_to_sleep routine, it will be great if you can share.