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Derive an exact timer rate from PLL

Question asked by e d on May 30, 2017
Latest reply on Jul 13, 2017 by e d

Hello,

I am working with the STM32L486 chipset and we need to generate an exact 38400Hz timer. Currently we have a 12.5MHz or 25MHz external clock coming in but the PLL clock tree does not seem to favor getting the exact 38400Hz rate for a timer. Is it possible with the above external clock rates? or if not, any suggestions to get this, including a different rate for external clock source?

Thanks,

ED

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