I2C slew rate limiter

dliky2 · ‎2022-06-05

Hello everyone,

Is there a setting/command to limit the slew rate of I2C signals of a STM32F429ZI-Disco board? I know this feature is available on some Microchip micro-controllers.

Thank you.

Peter BENSCH · ‎2022-06-07

Essentially, for each GPIO and thus also for the I2C pins, you can set the maximum output speed between Low/Medium/High/Very High, which has a direct influence on the slew rate.

Does it answer your question?

Regards

/Peter

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Peter BENSCH · ‎2022-06-07

Essentially, for each GPIO and thus also for the I2C pins, you can set the maximum output speed between Low/Medium/High/Very High, which has a direct influence on the slew rate.

Does it answer your question?

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.

dliky2 · ‎2022-06-07

Yes it does! Thank you Peter.

Andrew Neil · ‎2022-06-07

Presumably, this affects only the fall time - the rise time would be set by the pullup?

Peter BENSCH · ‎2022-06-07

Correct.

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