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Associate II
February 8, 2026
Solved

Stm32l552 event wakeup pin

  • February 8, 2026
  • 1 reply
  • 119 views

I am using stm32l552zetxq. I am testing standbymode with wakeup from event. According to reference manual RM0438, there are 5 wake up pin to wake up the mcu from standby/shutdown mode wkup1 to 5 with polarity setting option in PWR_CR3 and PWR_CR4. But i could not find whic are those 5 pins in datasheet and in reference manual. By searching i find that PA0,PC13,PE6,PA2,PC5 in a documents ""en.STM32L5-System-Power_control_PWR.pdf" in page no 40. Now my question is what is the wkup no of which pin. It should be mentioned either in data sheet or in reference manual. It be very help full to me kindly provide the document with page no or article number and te documents.

Best answer by sourav

Ok many many thnx got in in data sheet . Pin description page no 89 onward

 

1 reply

TDK
Super User
February 8, 2026

> Now my question is what is the wkup no of which pin.

They are listed in the datasheet. For example, pin PA0 is WKUP1 and PC5 is WKUP5. You can ctrl-f to find the others.

TDK_0-1770562185568.png

TDK_1-1770562206405.png

 

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souravAuthorBest answer
Associate II
February 8, 2026

Ok many many thnx got in in data sheet . Pin description page no 89 onward