Murray Neill wrote:

> The data sheet indicates it can be done, but that there is the possibility of
a 'bus conflict'. This is where I got a bit lost. Has anyone used this approach
and, if so, what do I need to watch out for?

The conflict occurs when you read from the device and the initial data
bit, which is a dummy '0' bit, overlaps the A0 address bit.

See the data sheet for the 93LC56. There is a small heading DI/DO which
explains this and look at the read timing diagram.

See AN530. It shows how to interface 4 and 3 wire to these memories.

--
Best regards

Tony

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