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WKUP and EXTI

Question asked by Petras.Jason on Jan 31, 2017

Hello!

 

I have a basic question about the association between WKUP and EXTI signals in a STM32. I am using a STM32L467.

 

My system has a push button that I want to use to wake the mcu from the STANDBY power mode. I also want to use the button as a interrupt when the mcu is in RUN mode. 

 

Must I connect the push button to two different pins, a WKUP pin and a EXTI pin to do this, or is the WKUP pin enough?

 

Yes, this is a very basic question. I looked through the Reference Manual and it appears that I *would* have to connect the button to the two pins. However, I would appreciate at an opinion from the community. 

 

Thank you!

Jason

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