As microcontrollers go, PICs have a wide range of supply voltage.  But
the place to look is at the datasheet.  A commercial 16C54 runs from
3.0V to 5.5V.  Your 6+V battery minus a diode gives you 5.3+V at the
start of life, and the PIC should run till the battery is 3.0 + 0.7 =
3.7V  That should be almost all the life of an alkaline battery.  We
generally consider alkalines dead at 1V/cell.

Sherpa Doug

> -----Original Message-----
> From: Giles Honeycutt [mailto:programmer1@HOTMAIL.COM]
> Sent: Thursday, August 23, 2001 12:43 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [PIC] 2 X 3VDC bat with PIC
>
>
> How well does a PIC rated at 5.5VDC work with a little over 6
> VDC on them?
> I can use a diode to drop it down (0.7vdc) a little, but I want it to
> operate over as much of the batteries life as possible.
>
> Any suggestions or experience on this?
> A low fallout on the PICs may be acceptable.
>
> Best regards,
> Giles
>
>
>
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