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Visitor II
May 30, 2025
Solved

What is the timer clock frequency for STM32H755 chip ?

  • May 30, 2025
  • 3 replies
  • 522 views

Hi, 

What is the frequency of timer2 which is of 32  bit with prescaler value 0 for NUCLEO-H755 board and how to check it ?

 

    This topic has been closed for replies.
    Best answer by mƎALLEm

    Hello,

    TIM2 kernel clock is generated from APB1:

    From the reference manual:

    mALLEm_0-1748592763738.png

    In CubeMx:

    mALLEm_1-1748592829518.png

    That clock is devided with the timer prescaler

    3 replies

    Visitor II
    May 30, 2025

    You can check the clock and prescaler in STM32CubeIDE.

    mƎALLEmAnswer
    Technical Moderator
    May 30, 2025

    Hello,

    TIM2 kernel clock is generated from APB1:

    From the reference manual:

    mALLEm_0-1748592763738.png

    In CubeMx:

    mALLEm_1-1748592829518.png

    That clock is devided with the timer prescaler

    Visitor II
    May 30, 2025

    Thank you soo much

    Graduate II
    May 30, 2025

    Divide it down and have in Toggle mode one of the TIMx_CHx pins associated with it.and measure it on a scope?

    The clock tree should be usable to determine the base frequency.