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Min. SPI Baudrate PowerStep01

pf8645
Associate II

According to the datasheet of the powerstep01 driver, a minimal baudrate of 5MHz has to be respected for the SPI interface. Is there any technical reason for that or can a lower (lets say <1MHz) baudrate be used for communication?

1 ACCEPTED SOLUTION

Accepted Solutions
Peter BENSCH
ST Employee

In fact, the data sheet is somewhat misleading at first glance because it does not state the

  • SPI clock frequency

but rather the

  • Maximum SPI clock frequency

as mentioned by Cristiana.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

View solution in original post

3 REPLIES 3
Cristiana SCARAMEL
ST Employee

Hello @pf8645​ and welcome to the ST Community.

The 5 MHz is the Maximum SPI clock frequency - see powerSTEP01 datasheet at page14.

So you can use a SPI clock frequency lower than this value.

Let me know if I solved your doubts, if so please "Select as Best" label.

If you feel a post has answered your question, please click "Accept as Solution"
Peter BENSCH
ST Employee

In fact, the data sheet is somewhat misleading at first glance because it does not state the

  • SPI clock frequency

but rather the

  • Maximum SPI clock frequency

as mentioned by Cristiana.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
pf8645
Associate II

Thanks a lot for the answers, I was indeed a bit confused by the datasheet, since the max frequency is stated in the "min." column.

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