Problem running from a 3v battery

[mister_e]

Did you also tried with the LF serie???

Did you try to disable the Brown-Out detect fuse???

F serie are suppose to work @ 3v under 10MHZ. See the Voltage-Frequency graph at the end of the datasheet.

I have a load (>10 000 units) of these F serie and LF serie on the market now running with a pair of AAA cells. No problem with them... as now...

[Bob_W]

Do you have the BOREN configuration bit set? If so, it looks like you'll be in brown out reset if you are under 3.65-4.00 volts.

[Bruce]

I think Bob has hit on the problem. You'll need to disable BOR, and stay below 10MHz oscillator frequency to run this PIC at 3V.

[Bob_W]

Actually, I think it was race to the finish between me and mister_e based on the timestamps. He said it also..... He must type faster than me : )

[mister_e]

hehe i had this impression of 'already said before' or "DEJA VUE' depending french ore english version you want to have.

Now that we are 3 with the same version/results... i must be true

[tbirchall]

I did try disabling the brown out and got interesting results. I think I mentioned above that I have a button triggering an interrupt that flashes an LED. Well, with brown out disabled, the LED constantly flashes. I don't have to press the button. (At least it runs, but not how I'd hoped.) I should have mentioned that I'm using the internal oscillator. Honestly, I'm not sure what it is running at. I think it defaults to 4MHz.

[mister_e]

Can you post your code?