Values Capacitor HSE & LSE

[Marcel Blindu]

Which values can I suppose for Cin, Cout and Board Strays for STM32F103 and STM32L4 for HSE and LSE using the ecuation 1 in the following datasheet of the abracon "https://abracon.com/uploads/resources/PierceOscillator_Fundamentals.pdf"

[Uwe Bonnes]

Have a look at AN2867.

[Marcel Blindu]

This values don't appear in the datasheet AN2867

[Pevy.Andy]

Look at the very last line of section 3.3

[Marcel Blindu]

Is the same formula for HSE and LSE for all SMT32 microcontrollers?

CL=(CL1*CL2)/(CL1+CL2) + Cs

and the Cs we can suppose 5pF?

[Pevy.Andy]

Seems reasonable.

[Marcel Blindu]

How to prove if the selection of the load capacitors CL1 and CL2 is correct?

Maybe with oscilloscope?