Make sure rb3 is pulled low on powerup and resets.
It bit us also.. It goes into low voltage programming mode.

best regards,
Giles

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Kelly J Kohls
Sent: Thursday, December 23, 1999 3:38 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Problem with 16F877


Greetings all,

Has anybody experienced any problems with the 16F877's?  I have two that
I have
tried programming the same code into and sometimes the code runs and
sometimes it doesn't.  Any ideas?


Kelly Kohls, N5TLE
Dallas, TX
Email:  kkohls@juno.com  OR  n5tle@qsl.net  OR n5tle@arrl.net
Homepage:  http://www.qsl.net/n5tle/

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