Lpc2000

Hi Rob, thanks for the seuggestion and link. I looked at that at one
time as a cheap expansion for the 2106 and even ordered some parts to
play with but haven't had time to try it. Time is critical on this
project, so I was going to go the safe route and use the Microchip
version for now. 

regards,
Charles


--- In lpc2000@yahoogroups.com, "Rob Jansen" <rob@m...> wrote:
>
> Charles,
> 
> >   I have a LPC2106 design that turns out to need more input lines then
> > the 2106 has. Has any one have any luck with extending the I/O of the
> > 2106 with the SPI bus?
> 
> yes, a 74HC595 (serial in, parallel/serial out shift register) as an
8 bit
> output expander is used to control a 7-segment LED at the Embedded
Artists
> prototype board:
> http://www.embeddedartists.com/products/boards/prototype.php, schematics
> can be found from that page.
> 
> Knowing the 74Hc series a counterpart (parallel in - serial out) in the
> same range. Looks like the 74HC597 is a cheap SPI input variant.
> (http://www.standardics.philips.com/products/hc/pdf/74hc597.pdf)
> 
> Rob
>