zipwize@comcast.net wrote:
> I think you are right about the MCLR as a CMOS input.

You only *think* he's right when the datasheet clearly spells this out!?

> I'm surprise about not needing to deal with all the other
> unused inputs if I pull down MCLR.

You have other unused inputs?  Those are just as bad.  Probably the leakage
current is pinning them to one rail or another.  Just because you happen to
get away with it at that temperature, voltage, capacitive coupling to other
signals, phase of the moon, and proximity to particular species of dead fis=
h
doesn't make it a good idea.

It's a good idea to make all unconnected pins outputs and drive them low.
Some people will no doubt now chime in with all kinds of religious reasons
to deal with unused pins differently, like adding resistors, never tie them
to power or ground, always tie them to ground, etc.  Don't worry about all
the superstition-based electronics; it really is as simple as I said.


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