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Visitor II
October 19, 2024
Question

STM32H7R7: ambiguous PLL VCO range

  • October 19, 2024
  • 1 reply
  • 689 views

stm32h7r7_vco1.png

stm32h7r7_vco2.png

The VCO range has 2 version in STM32H7R7 RM, so which is correct?

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    1 reply

    Technical Moderator
    October 19, 2024

    Dear @VSF ,

     

    Thank you very much for posting the question , VCOL is correct but VCOH the right ranges are in product datasheet here :

    https://www.st.com/resource/en/datasheet/stm32h7s3a8.pdf#page198
    we should fix the Reference Manual and make a reference to the datasheet.

    IMG_0094.jpeg

    IMG_0093.jpeg

    look at row : fVCO_OUT for Wide range table 64.   

    just saw another typo in Table65 in datasheet for IDD(PLL) last raw condition should be 150/420MHz not 192/836MHz . We should fix as well 

     

    Regards,

    STOne-32