Now that is really embarrassing. I answered the wrong
question with my previous post. It was a good answer .. just
a dumb submission.  The Serial Pic'n book is good - better
than this poster.

Sorry,

Dan

-----Original Message-----
From: Greg Wiley <greg@LOOP.COM>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Monday, July 26, 1999 12:50 PM
Subject: Re: Serial programming


>Darren Logan <DAZLOGAN@AOL.COM> wrote:
>
>
>> Can someone explain to me how one can program a PIC
serially using only
>two
>> pins ??.
>
>Excruciating detail is available in the
>programming spec sheets at microchip.
>Different devices have different specs.
>
>It's not really just two pins, you need
>to supply power, ground, and a program
>signal.  But once that's done, you shift
>the programming commands in using
>two pins.  On one pin (program data),
>you set the bit to be shifted, on the
>other pin (program clock) you toggle
>the levels to shift the data bit in.
>
>> Where can I find the serial programmers ?? and how do
they work ??
>
>Read the articles by Myke Predko
>at www.rentron.com/pic.htm for a
>much better explanation and a simple
>programmer (for the 16F84) circuit.
>
>  -greg