APB2 Timer frequency on STM32F407VET?

[kgavionics]

Hello guys

I'm really confused. I'm using Timer10 which is connected to the APB2 bus and my system is running @168Mhz,so according to STM32 Cube my Tim 10 freq should be 168MHZ, but on the datasheet is showing that the ABP2 bus is running @84 MHZ. Which one is correct?

TIA

[ppTRN]

I think that the 84MHz denotes the speed at witch the bus is able to allow communication between the CPU and the peripherals, not the actual speed of the peripherals attacched to it. You can also see from Cube that you have a x2 block before the clock is fed to the timers of such bus, so apparently timers are clocked separately from the rest of the peripherals

[pcprogrammer]

You can find information about all of this in the reference manual. https://www.st.com/resource/en/reference_manual/dm00031020-stm32f405-415-stm32f407-417-stm32f427-437-and-stm32f429-439-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf

See page 152 for a picture of the clock tree. (Section 6.2)

It shows what ppTRN wrote.