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STM32F072: What is the best PREDiv for 25 MHz HSE?

Question asked by diez.r on Mar 30, 2016
Latest reply on Mar 30, 2016 by diez.r
Hi all:

I have a board with an STM32F072. The HSE runs at 25 MHz, because I need to supply another chip with that frequency over the MCO output.

What are the best PREDiv etc. settings for this input frequency? On the bigger chips (STM32F1xx, STM32F4xx) there are "/M" and "/N" prescalers that offer much flexilibity.

On the STM32F072, is it possible to obtain a clean 48 MHz frequency from a 25 MHz input clock? I guess I couldn't use USB then.

Many thanks in advance,
  rdiez

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