Ben,

 Just an FYI... The socket you are looking for is actually a ZIF
 socket, not ZIP.   ZIF stands for Zero Insertion Force.  Thought
 you might like to know.

                                             Regards,

                                               Jim






On Sun, 08 July 2001, Benjamin Bromilow wrote:

>
> Hi all,
>
> Found the problem. It appears I had a loose connection on the IC socket I
> was using. It was an intermitent problem whereby if an IC pin was in the
> socket a large amount of pressure was needed to make the connection.
> Strangely, if there was not pin in the socket the connection was fine. Hence
> getting 5v from the socket with no pin in place but 0.5v if it is
> (presumably voltage coming through to VDD pin through the PIC- ouch!).
> I found eventually that pressing hard down onto the top of the PIC sorted
> it, but I'm off to buy a ZIP socket now to sort it out once and for all.
> That particular PIC is resigned to R+D now, what with VDD sourcing
> voltage(!) and being pushed around.
> The second problem I encountered was that I had set the code protect bit
> during programming (how stupid am I?). This meant I read 0000 for all the
> program data segments. I assumed there would be some kind of warning from
> the program if you tried to read a code protected chip. Oh well.
> So all sorted at last!
>
> Ben
>
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jim@jpes.com

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