topic Re: Using Kinetis SPI without SIN in Kinetis Microcontrollers

Using Kinetis SPI without SIN

myke_predko — Wed, 18 Dec 2019 22:08:43 GMT

I'm using a SPI port to write data to just an OLED display, there is no SPI data output that I would connect to the SPI SIN - currently I'm tying the pin to VSS.

So, the obvious question is, could I use the pin I've allocated for SIN as a DI/DO and ignore what happens inside the chip? Reading the RM, I don't see how this could be a problem, but I thought I'd ask the wise people here.

Re: Using Kinetis SPI without SIN

nxf56274 — Thu, 19 Dec 2019 01:08:55 GMT

Hi,

If the SIN do not influence the communication between the master and slave, you can ignore it. And use it as general IO.

Have a great day,
TIC

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Re: Using Kinetis SPI without SIN

myke_predko — Thu, 19 Dec 2019 01:54:30 GMT

Thank you - it's nice getting the extra pin.

Have a great day!