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3-wire and 4-wire SPI slave devices on the same bus?

Question asked by Michael Wloch on Jan 28, 2019
Latest reply on Jan 28, 2019 by G.w. Sun

Hi,

 

I have a project with LCD segment driver PCF8551B. It has got a 3-wire SPI interface.

 

I would like to connect PCF8551B and other 4-wire SPI device as a slave to the same SPI bus.

 

Is it possible for these devices to work on the same bus in a good way?

 

Waiting for reply.

 

Best regards,

 

Michal

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