Hi Shawn,

If you study the connection of the header on page 7, you'll find that pin3
of the header will be mapped to pin 1 of you target circuit, whereas pin 12
(header) mapped to pin 8 (target).  And when you're using the header, the
ICD2 connection will use the extra pins which exist only on the -ICD device
you find on the header. Actually this is the main point why Microchip make
this header - to free up the pins which normally would be utilised for
debugging. To sum it up when you're using the header, use the RJ11 connector
on the header.  When you work with a 'real' chip, use the connection as you
did before (MCLR + ICSPCLK + ICSPDAT on the actual 8-pin device).  And yes,
you can't use the header to program a real chip... 'real chip' is referring
to actual chip which has 8 pins, the 14-pin -ICD device on the header is NOT
a real chip.

But I read your recent reply - your target is a SMD part?  How would you fix
that header to your target circuit? Wire wrap all the connections?


Best regards,

WH Tan




> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
> Of Shawn Wilton
> Sent: 27 September 2006 14:38
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] Problem with PIC12F675 A/D conversion
>
>
> Yeah, that's the document leaving me so confused.  It mentions that you
> can't use the header to program your target device.  So I'm going to need
> two cables?  One to go through the header and another to use with the RJ11
> socket?
>
>
>
> On 9/26/06, WH Tan <tanwh@notes.src.global.sharp.co.jp> wrote:
> >
> > Shawn,
> >
> > You should get 2 pieces of 4-pin gold plated stand-off connector.  Thing
> > would be much easier if you used machined DIP IC socket on your target
> > circuit.  So just plug the 2 stand-off connector into the socket on your
> > target circuit.  The ICD2 header (the small PCB with a chip and RJ11 on
> > it)
> > should have an 8-pin DIP socket at the bottom side.  Align and
> confirm the
> > orientation and plug it into the other end of the 2 4-pin header.  From
> > now
> > on, use ONLY the RJ11 socket on the header.  With the ICD2 header in
> > place,
> > NEVER use the ICD2 connection intended for a real chip, if you
> have one on
> > your target circuit.
> >
> > I suppose you should have a printed copy of this, but just in case you
> > don't
> > have it:
> > http://ww1.microchip.com/downloads/en/DeviceDoc/ICD2_Header_51292L.pdf
> >
> >
> >
> > Best regards,
> >
> > WH Tan
> >
> >
> >
> >
> >
> >

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