What is the exact meaning of''the EXTI can detect an external line with a pulse width shorter than the internal APB2 clock period'' in STM32F1

Posted on December 28, 2017 at 13:31

Please if anyone can explain this to me!

Thanks in advance.

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Chief

Posted on December 29, 2017 at 12:10

A minimum pulse width on EXTI is enough to trigger the interrupt. This minimum pulse width is not dependant an th APB2 clock frequency,

Guru

Posted on December 29, 2017 at 17:28

But is likely dependent on the resychronizer at the pin.

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Visitor II

Posted on December 29, 2017 at 23:15

Clive,

this has been discussed a couple of months ago, and as Edison from the ST Prague support group confirmed, EXTI is surprisingly asynchronous.

Jan

Associate III

Posted on January 18, 2018 at 13:22

Thank you all for helping me !!

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