Hi Jarod,

According to Atmel's parts code decoder (http://www.atmel.com/general/
resources/doc0538.pdf) the part number suffix contains the speed (10
vs 4), the package type (both plastic DIP), and the allowed
temperature range (industrial (-40 to +85 C) vs. commercial (0 to 70
C).

Basically, the difference is that the Project-Parts version is rated
to be used over at a greater speed over a greater temperature range.
It'll be just fine as a replacement for the AT90S2313-4PC.

Note that you still want to run it at 4MHz, instead of increasing it
to the 10MHz that it's capable of, so that you don't change the timing
in John's programming.

David

--- In chordite@yahoogroups.com, "JarodKelly" <jarodkelly@y...> wrote:
>
> David,
>
> Thanks for the heads-up, it just took mouser 12 days to tell me they
> couldn't get me the AT90S2313-4PC. My question is how does the 4PC
> differ from the 10PI, I'm not very skilled in electronics (more of a
> mechanical, form and ergo person) and was hoping to just sort of
> plug-n-play that part of the design from the suggested items in the
> kingpin BOM. All help is appreciated.
>
> I was just about to ask this group if anyone had any extra 4PC's
that
> I could buy from them. So, finding this bit of news was very
helpful.
>
> Thanks,
>
> -Jarod
>
> --- In chordite@yahoogroups.com, "bowdends" <bowdends@y...> wrote:
> >
> > For those who are having trouble finding them:
> >
> > The 2313 PIC is no longer being carried by digikey or mouser, but
> > there are still some available.
> >
> > Project-parts.com (http://www.project-parts.com/home.php) claims
to
> > have 891 in stock, and is currently charging $2 each (less in
> > quantity). They wanted $5 s&h to send one to Michigan. I haven't
> > ordered one yet, so I don't know how quickly they respond.
> >
> > David
> >
>