The same thing happened to me with port RC2. But it was the 16C77-ME that
was damaged. I traced the output pin back through daughterboard to figure
out which chip was faulty. Apparently the 16C01-ME is the more commonly
damaged.
Avnet (locally) managed to get a replacement out of their Singapore office
but it took about 3 weeks.
They were generous enough to make it no charge but then we do spend a lot of
money with them!
Replacing the part is a piece of cake - just take the normal static
precautions.

Richard P

> -----Original Message-----
> From: Todd Peterson [mailto:toddp@ELABINC.COM]
> Sent: Thursday, October 21, 1999 6:24 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Bondout Chip
>
>
> Greetings all,
>
> Our ICEPIC II in-circuit emulator seems to have developed a
> new "feature".
> RB5 seems to not be able to drive high or low.  If externally
> pulled high,
> the emulator software indicates the pin is high, otherwise
> when a high is
> written the emulator software still says the pin is low.
> Pulled high with a
> 4.7K, it cannot pull itse;f low, either.  I suspect static
> damage to the the
> bondout chip, PIC16C01-ME.  Does anyone have any experience
> in repairing
> ICEPIC daughterboards?  The system diagnostics program tests
> all OK, so I
> suspect it is the output driver of this chip.  Is Microchip
> the only source
> for 16C01-ME's?
>
> Thanks for any and all assistance!
>
> Todd Peterson
> E-Lab Digital Engineering, Inc.
>
>    (816) 257-9954  FAX: (816) 257-9945
>    http://www.elabinc.com
>