I think useing a zener would hurt over all battery life.  It would pull down
and drain durring shelf life.  I need low current draw durring sleep mode.
Best regards,
Giles


>Have you considered a resiter and zener diode? Say a 5.1V one. That way you
>get the best of both worlds, the zener keeps the voltage at 5.1V as long as
>the input is about 5.1V, if it drops then the Zener does nothing and your
>PIC will continue to function until the voltage is to low for it. TTYL


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