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TwelveSquared
Associate III
May 28, 2021
Solved

STM32H7x3 max SPI123 and SPI45 kernel clock freq?

I can't seem to find it in the datasheet: what is the max allowed kernel clock frequency for SPI123 and SPI45?

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Tesla DeLorean
Tesla DeLoreanBest answer
Guru
May 28, 2021

https://www.st.com/resource/en/reference_manual/dm00314099-stm32h742-stm32h743-753-and-stm32h750-value-line-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf

Also for H743

0693W00000BZYkHQAX.jpg

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3 replies

Tesla DeLorean
Guru
May 28, 2021

Usually the Kernel Clock Distribution Overview in the RM not the DM/DS

On the H745/H747 to hand SPI123 200MHz SPI45 125 MHz

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Tesla DeLorean
Tesla DeLoreanBest answer
Guru
May 28, 2021
Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
TwelveSquared
Associate III
May 28, 2021

Thank you! I went crazy looking for that. Now I see it, in table 59 of the RM, rev 7. Thanks