On Tue, Mar 18, 2003 at 12:41:45AM -0500, Konstantin Klitenik wrote:
> Can TLVP program 16f84?

No. The Low Voltage version can only program newer chips in Low Voltage mode
which the 16F84 doesn't have. It's one of the reasons I prefer the 16F628.
The others are outlined here: http://www.finitesite.com/d3jsys/16F628.html

However all is not lost. With the addition of a high voltage supply. a
transistor, and a couple of resistors, the High Voltage version is here:

http://www.finitesite.com/d3jsys/proghvp.html

Note that you must invert the MCLR signal.

Getting back to your original question, I'll bet that it's the cable. So
rule it out by using a shorter cable for testing.

Also triple check and test your configuration.

In the two years I've been supporting TLVP, these are the common causes for
failed operation.

BAJ
>
> >From: jim barchuk <jb@JBARCHUK.COM>
> >Reply-To: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
> >To: PICLIST@MITVMA.MIT.EDU
> >Subject: Re: [PIC]: PARPIC AND TAIT's FPP programmer
> >Date: Mon, 17 Mar 2003 23:12:16 -0500
> >
> >Hi Konstantin!
> >
> >On Mon, 17 Mar 2003, Konstantin Klitenik wrote:
> >
> > > All the settings are fine.  I just took it from PicStic programmer so it
> > > should be fine.  Cable is about 4 feet long.  It seems to be able to
> >drive
> > > LEDs well.  I don't think this is what the problem is.  How long should
> >the
> > > cable be?
> >
> >Well yeah, you can probably drive a LED 40' and not suffer much visible
> >difference but I doubt you could run much communications of any kind
> >through it and I *know* you can't run a plain vanilla PC printer that far.
> >:)
> >
> >The recommended max cable length for TLVP is 2'. I'm also using FPP and
> >the combo never fails.
> >
> >Have a :) day!
> >
> >jb
> >
> >--
> >jim barchuk
> >jb@jbarchuk.com
> >
> >--
> >http://www.piclist.com hint: To leave the PICList
> >mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
>
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