This is a very embarrassing thing to admit, but the problem was actually
with my programmer.

I tried a different programmer, and could program all those PIC's that I
couldn't before.

_____
Andr=E9 Miller =09


-----Original Message-----
From: pic microcontroller discussion list =
[mailto:PICLIST@MITVMA.MIT.EDU] On
Behalf Of Mike Hord
Sent: 17 February 2004 07:48 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] How to check if PIC is damaged?


I don't know off of the top of my head if the 628 has unresettable code
protection or not, but that sounds like the kind of error you might get =
from
setting a code protection bit.  At least, that's what caused a similar
problem in my world a few weeks ago.

Mike H.

>Hi,
>
>Is there a way to determine if a PIC is damaged? On two PIC's I have=20
>the following symptoms:
>
>- When I put it in programming mode I can read from it (can verify that =

>the chip id is a 16f628).
>- I cannot write anything to it. (writing and then verifying the=20
>written data always fails)
>- I have three 16F628's. Two out of the three always exhibit the above=20
>behaviour, the other one works fine.
>- This started to happen after trying to build a wisp628 on stripboard=20
>(which I probably messed up, its my first stripboard project ;-) Before =

>trying to use the 'new' wisp628 all the PIC's worked fine. I'm still=20
>having problems with this programmer, but the original one I built on=20
>solderless breadboard still works fine and that s the one I'm using for =

>the above tests.
>
>PS: Yes, I'm going to order a Wisp628 kit from Wouter as soon as I sort =

>out method of payment from South Africa ;-)
>
>
>--
>Andri Miller
>
>--
>http://www.piclist.com hint: PICList Posts must start with ONE topic:
>[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

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