Crystal and Capacitor Select for STM32H743VIT6

[testbenchmark]

Hello,

 

I want to design a PCB with STM32H743VIT6 MCU. But I am not sure how can I choose crystal and capacitors properly. In STM32H743VIT6 datasheet there is one section about this topic;

according to this information should I take the Cstray value as a10? (Many other documents suggesting 3-5 pf)

so if I choose 16MHz 12pf Capacitor my values are gonna be like this;

CL = 12pF

Cstray = 10pF

C1 and C2 load caps,

Formula : CL(crystal)​=( (CL1 * CL2) / (CL1 + CL2) )​+Cstray

CL1 = CL2​ --> C

12 = ( C / 2 ) + 10pF

C values are should be 4 pF instead of 12pf in the circuit ?

 

[RobK1]

You might want to read this:

How to select a compatible crystal and load capaci... - STMicroelectronics Community

[mƎALLEm]

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@RobK1 wrote:

You might want to read this:

How to select a compatible crystal and load capaci... - STMicroelectronics Community

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Cs is estimated at 3pF.

Refer to the calculation in the knowledge base shared by @RobK1 . You can use the Excel file calculator attached to the knowledge base:

+ AN2867 "Guidelines for oscillator design on STM8AF/AL/S and STM32 MCUs/MPUs"

and there is a table in that app note that lists the recommended crystals 6 Recommended crystals for STM8AF/AL/S MCUs