Mike Keitz wrote:
>
> I've got a few NJU6355 real-time clock chips but no real data for
> them.
> I have something working based on what little I could find on the WWW
> but
> I need to know a couple more things to be sure it's officially in
> spec:
>
> * When clocking bits in, does the chip take them on the rising edge of
> the clock or the falling edge?  It appears that when clocking bits
> out,
> they change on the falling edge.
>
> * What's the maximum clock rate/setup time, etc?
>
> * Does the chip need the R/W pin held for the entire shifting
> sequence?
> It would be nice to be able to share it with Clock or Data, saving a
> PIC
> pin, but my preliminary experiments at that were not successful.
>
> Once I get this little "test program" in shape (it reads/writes the
> 6355
> and presents the results in ASCII RS-232), I'd be glad to post it to
> the
> list or send it to someone to put on a WWW site.

Is there enough at:
http://www.micromint.com/modules.htm
to give you what you need?
Digikey also has a spec sheet for $2 I think it is.

Don McKenzie  mailto:don@dontronics.com   http://www.dontronics.com

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