Thanks but I was looking for something I can memory map straight onto a
standard bus, this would allow increased switching speeds.

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Rfiles
Sent: 15 April 2004 01:54
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE:] Memory mapped I/O expander


Dont't know if it helps, but you may want to check microchip MCP23016.
It's a 16-Bit I2C I/O Expander.

Regards,
Ricardo Reis


-----Mensagem original-----
De: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]
Em nome de Andrew Seddon
Enviada: quarta-feira, 14 de Abril de 2004 16:54
Para: PICLIST@MITVMA.MIT.EDU
Assunto: [EE:] Memory mapped I/O expander

Hi,

Is anybody aware of a 'ready to go' I/O expander that can be attatched
to a standard async memory bus?? I know phillips/maxim etc do I2C and
SPI  I/O expanders but I can`t recall seeing a device that would attatch
to standard address/data bus. I realise something could be knocked up
with a couple of latches/some gates or some sort of programmable logic
device but I was wondering if anything was available off the shelf
first.

cheers,

best regards,

Andrew Seddon

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