Is there a reason to not use a serial eeprom?

However, as far as your question goes- I believe the impedance of a pin on the
PIC is high enough that you could hook 8 largish caps up to eight pins, and
charge or discharge them before turning the PIC off.  Run some tests, and report
your results.

I would probably charge them, then turn the pins to input before powering off
(just in case the chip decides to power itself from those caps that are charged,
and still connected to output high)

-Adam

hl wrote:
>
> I am using 16c505 pic 14 pin
> Could any one offer me any trick for making a memory when power is off for 8
> hours
> I was thinking if I could charge a cap before power of
> when power back on I could check status of pin
> thank you
> Bruce Stephens
>
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