Dan

I know this probably won't meet your reuqirements, but had you thought of
using a PIC ? You can certainly use a simple serial protocol on Port A of an
F84 (or the 505 which is cheaper) and use Port B as I/O, you can then drive
the oscillator input from your main processor clock and it will use only one
component - the PIC itself.

Robin Abbott - robin.abbott@fored.co.uk

**************************************************************************
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* Forest Electronic Developments
* http://www.fored.co.uk
*
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----- Original Message -----
From: Dan Tye <dtye@TEL-TRON.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: 13 November 1999 21:11
Subject: SPI 8bit I/O expander...


> I'm coming back to the well again....
>
> After hours searching on the web, I've been unable to find an SPI based
I/O
> expander (8bit).  I have found several I2C devices, but I would like to
use
> SPI if possible.  Does anyone have a suggestion of where I might look
next?
>
> +++++++++++++++++++++++++++++++++++++++
> ++      Dan Tye
> ++      Chief Engineer
> ++      Tel-Tron Technologies Corporation
> ++      220 Fentress Boulevard
> ++      Daytona Beach, FL 32114
> ++      Phone: 904-255-1921    Fax: 904-258-3782
> +++++++++++++++++++++++++++++++++++++++