GPIO Output speed range STM32H7

Forum|Forum|5 years ago
December 9, 2020
2 replies
4145 views

Hi,

I am working with STM32H743ZI

I was configuring GPIO output pins and I have to define "speed" which I assume is related to opamp slew rate. But I have a problem with the units, I can choose between "Very high", "High", "Medium", "Low". After reading the GPIO section of the reference manual I still don't know what these terms are referring to. Perhaps "Very High" = sysclk/2 and "High" = sysclk/4 etc.

Regards,

Gabriel

This topic has been closed for replies.

Best answer by TDK

It refers to drive strength. The achievable frequency will depend on the capacitance of the circuit and your drive voltage (and some other things).

See tables 160 and 161 (Output timing characteristics) in the datasheet for details on this:

https://www.st.com/resource/en/datasheet/stm32h743bi.pdf

TDKBest answer

It refers to drive strength. The achievable frequency will depend on the capacitance of the circuit and your drive voltage (and some other things).

See tables 160 and 161 (Output timing characteristics) in the datasheet for details on this:

https://www.st.com/resource/en/datasheet/stm32h743bi.pdf

"If you feel a post has answered your question, please click ""Accept as Solution""."

Ons KOOLI

Associate

Hi Gabriel,

You can also find relevant details on the STM32 GPIO configuration for hardware setting sand low-power consumption Application Note provided by ST.

Best Regards,

Ons.

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