TIM2 Bus speed

[Marrkinho]

Hi,

I have an stm32G0B1 that i'm working on. I want to use a timer "TIMER2" but the block diagram of the board doesn't not give the AP2B2 clock bus. I know with other boards is usually mentioned. Where do I go to look for it, as I have looked and I struggle to find it.

[Andrew Neil]

Is this what you're looking for?

https://www.st.com/resource/en/reference_manual/rm0444-stm32g0x1-advanced-armbased-32bit-mcus-stmicroelectronics.pdf#page=161

via: https://www.st.com/en/microcontrollers-microprocessors/stm32g0b1vc.html#documentation

 

 

[Marrkinho]

Is it using HSI16? that's what  confuses me .

[Andrew Neil]

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@Marrkinho wrote:

Is it using HSI16? 

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Trace it through the diagram

[waclawek.jan]

It uses whichever primary clock source you've selected for SYSCLK, divided by the AHB prescaler and the APB prescaler (and optionally multiplied by 2 if APB divider is 2 or higher).

JW