‎2022-05-03 05:38 AM
‎2022-05-03 05:47 AM
Hi @SOCQU​ ,
usually, we assume Cstray (IO+PCB) at about 4 to 5 pF for both HSE and LSE.
See also AN2867: Oscillator design guide for STM8AF/AL/S, STM32 MCUs and MPUs
Regards.
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‎2022-05-03 05:46 AM
What microprocessor are you using?
‎2022-05-03 05:47 AM
Hi @SOCQU​ ,
usually, we assume Cstray (IO+PCB) at about 4 to 5 pF for both HSE and LSE.
See also AN2867: Oscillator design guide for STM8AF/AL/S, STM32 MCUs and MPUs
Regards.
In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'
‎2022-05-03 06:10 AM
Hi,
Sorry I've forgot to write I am using STM32MP151!
Sebastien
‎2022-05-03 06:36 AM
My comment above is valid for all STM32MP15 flavors.
‎2022-05-03 07:08 AM
thanks😀