> I could be mistaken, but I think the A/D will consume considerable current
> even in sleep if it is enabled.

The A/D is automatically powered down in sleep mode although the ADON bit
stays set if it was originally set.  The A/D will stay on in sleep mode to
finish the current conversion if one is in progress and the internal RC
oscilator is used to time the conversion.  Once that conversion is over, it
will be powered down.

At least this is how it is documented for the 16F87x.  It may be different
on older chips - I haven't looked.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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