On Friday 03 Oct 2003 11:16 pm, you wrote:
> Well I am thinking if the battery voltage was dropped the pic would be
> using less current during sleep and DC-DC regulators use to much current
> (for this purpose).  I am at 24uA currently during sleep, and hope to go
> even lower. This will make the difference between using a AA or C size
> battery.  About $5 difference for each unit that will be sold in qunatites
> of ten thousands.
>

Not sure about the PIC but with most micros, sleep mode current is heavily
dependent on the way the inputs and outputs are terminated.  I once was
involved in the development of a CO2 detector wich had a sleep mode design
target of 15uA which should have been achieveable.  When we got first masked
parts it was 150uA!!.  Turned out to be due to duff info about the best way
to terminate ins and outs to minimise sleep current.

Ian

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