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gilberto-falker
Associate II
June 23, 2026
Solved

STM32U073CCT6 LSE

Hi

 

We are developing a board with the STM32U073CCT6 CPU. Would it be possible to use a crystal with the following characteristics for the LSE?
32.768KHz Cl=6pF/ESR=50kR
In this case, what would be the recommended capacitor values?

BR

Gilberto

 

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
June 23, 2026

Hello,

You can refer to this knowledge base article: How to select a compatible crystal and load capacitors for STM32 with layout guidelines

Or for more details to the Application note AN2867 “Guidelines for oscillator design on STM8AF/AL/S and STM32 MCUs/MPUs”

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
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1 reply

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
June 23, 2026

Hello,

You can refer to this knowledge base article: How to select a compatible crystal and load capacitors for STM32 with layout guidelines

Or for more details to the Application note AN2867 “Guidelines for oscillator design on STM8AF/AL/S and STM32 MCUs/MPUs”

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
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