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

[michalwloch1]

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

[guoweisun]

Hi

Please make sure your SPI master both support 3line and 4line format,if yes you can connect them together.