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Brother Theo
Associate III
Apr 20, 2022 10:58 PM UTC
Question

How to determine timer clock source on stm32f746

According to MX Cube there are 2 timer clocks, APB1 and APB2. At max APB1 is 108MHz and APB2 is at 216. I can't anywhere where it shows which timer gets which clock.

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3 replies

TDK
Apr 20, 2022 11:30 PM UTC

It's listed in the register boundary address table. I agree it could be presented better.

Different RM, but probably same information:

0693W00000LyXQqQAN.png 

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Tesla DeLorean
Guru
Apr 21, 2022 4:17 AM UTC

Usually there's a big bus diagram showing which APB different peripheral live on. I also often dictates which DMA unit will service the peripheral side bus interaction.​

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waclawek.jan
Super User
Apr 21, 2022 5:01 AM UTC

> Usually there's a big bus diagram showing

> which APB different peripheral live on

... at the beginning of every STM32 Datasheet.

JW