David,

The programmer will assert !MCLR before doing any programming, so the pins
will be in high impedance state.

Microchip's programmers/debuggers are very well protected and can withstand
a lot of abuse, even reverse polarity.

Cheers,
Isaac

Em ter, 17 de dez de 2019 15:55, David Van Horn <
david.vanhorn@backcountryaccess.com> escreveu:

> A hopefully quick question:
>
> I have a system where I need to use the same connection for
> debug/programming and for serial comms.
> Is it possible to damage any of the uChip official programmers (PM3-
> PICKit etc) if the pic is asserting that pin and the programmer is trying
> to drive it opposite?
>
> --
> David VanHorn
> Lead Hardware Engineer
>
> Backcountry Access, Inc.
> 2820 Wilderness Pl, Unit H
> Boulder, CO  80301 USA
> phone: 303-417-1345  x110
> email: david.vanhorn@backcountryaccess.com<mailto:
> david.vanhorn@backcountryaccess.com>
>
> --
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> View/change your membership options at
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>
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