Check the Microchip errata sheet for this part, on the web site.

It is shipped with the low voltage programming (LVP) bit set, and normal
high voltage programming (thro /MCLR)  will not override it. RB4 the LVP pin
must be isolated (eg with plastic sleeve) on first programming, with config
set fo LVP off. In theory it can then be normally programmed with the usual
13V on /MCLR and RB4 should default to normal i/o pin.

I found that even after successfully programming the part in this way I
still needed to isolate RB4 subsequently.

Ken
----- Original Message -----
From: "A.J. Tufgar" <tufgaraj@MUSS.CIS.MCMASTER.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, June 10, 2002 10:09 PM
Subject: [PIC]: Programming the 16F627 with warp-13.


> Hey all,
>         I'm trying to program the 16F627 through MPLAB with my warp-13.
> It keeps giving me a failure message and I don't think it programs the
> bits or the code.  Any ideas?
>
> Thanks,
> Aaron
>
> --
> http://www.piclist.com hint: To leave the PICList
> mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
>
>

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads