> sleep for as much of the time as possible.  One way is to use the
> watchdog to wake up the PIC periodically.  On older PICs, the
> watchdog was a bit of a pig itself.  This has gotten better on some
> newer PICs but I don't remember if the 12F629 is one of them

It's not bad - 1.8uA at 3V. ExtRC is quoted at 450uA / 3V /
4MHz. I thought there was a uA vs frequency graph so Matthew
could estimate what he could expect at his lower frequency. With
the part asleep and a longish WDT period the average uA should
be quite low


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