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3 devices on SPI bus

ezanen9
Associate II
Posted on January 12, 2006 at 12:27

3 devices on SPI bus

2 REPLIES 2
ezanen9
Associate II
Posted on January 12, 2006 at 04:47

Hi all,

Does someone know if it is possible to connect 3 SPI devices on one SPI bus?

I have 2 touchscreen controller/driver IC's both with a SPI bus output and I want to connect them to the same SPI bus on my STR710 microcontroller.(I can not use the second SPI of the STR710) Is this possible?

Thanks,

Jimmey

rsherry
Associate II
Posted on January 12, 2006 at 12:27

Yes you can.

You just need to make sure you only select one device at a time (i.e. control the chip select inputs on the slave devices...in your case it will be your touch screen controllers).

Best regards,

Ryan.