Wouter wrote:

> If you used an ex-circuit programmer (ZIF socket type) it might have
> applied power to the wrong poins, or (worse) to the power/ground pins
> but reseversed. This is one of the (few) ways to kill a PIC.

My personal experience is this:=20
Once I inadvertently placed a 16F628 upside down on the ZIF socket of a
self-made EPIC programmer and hit the Program button. When I got the =
error
message, I spotted the mistake, removed the PIC and placed it the right =
way
around. Luckily, the programming went through without any hassles and =
that
PIC is normal till today. Despite reversing power and ground lines and
applying Vpp to pin 13 (RB7), I failed to kill that PIC! I have heard =
about
similar experiences from others too. Perhaps, it's a question of how =
long the
high voltage should be applied on the wrong pin to permanently damage =
the
PIC!

Regards,
Bala

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