On Fri, 11 Mar 2011 00:40 +0530, "Manu Abraham"  wrote:

>=20
> Just to make myself feel a bit safer: even in those cases, where /MCLR
> is not floated, does it hurt if there is the regular 10k pullup ?

When the ICD2 turns on VPP the higher voltage will cause current to flow
through the resistor into your positive supply, with a 10K resistor
it'll be almost a milliamp. If there is not enough load to absorb it, it
can raise your power supply voltage. If you are powering the target off
the ICD2 then you are probably OK, or if you have enough load on the
target's power supply.

You can use higher value resistors, 47K is fine. Then there is less
current and less chance anything will happen.

Cheers,

Bob

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