> > Hi Everyone!
> > =

> > Something very odd just started happening to my pickit2 programmer about
> an
> > hour ago.  All of the sudden, it's destroying chips.  I'm using the
> > PIC16F628A. and the software recognizes that I have inserted a blank mi=
cro
> > with that model on it.  Program it once, and suddenly the device is
> > unrecognizeable.  Interestingly enough though, if I power VDD to the un=
it,
> > it will run the firmware on the chip with what seems to be without issu=
e. =

> I
> > just can't ever access the chip again.  It's very frustrating and was
> > wondering if anyone experienced something similar?
> > =

> > Thanks,
> > =

> > -Eric
> =

> Try selecting Use VPP First Program Entry under Tools.
> =


You might also try the PICkit 2 programmer instead of using MPLAB (if that =
is =

what you are using now). In my experience it seems to better handle issues =
with =

erasing and reprogramming chips that has internal osc + MCLR pin as an inpu=
t.

I used to do this all the time with my ICD2 + MPLAB but I somehow broke the =

output buffers and replaced it with an ICD3 and then I could not reprogram =

chips that had internal osc and no MCLR. The pickit 2 + MPLAB mostly works =
but =

sometimes I can only get the PICkit 2 programmer to work. =


/Ruben
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124, 200 39 Malm=F6, Sweden
TEL INT +46 40142078
FAX INT +46 40947388
ruben@pp.sbbs.se
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D

-- =

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