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K82 : LLWU and GPIO digital filters combination

Question asked by Eugene Hiihtaja on Jan 25, 2019
Latest reply on Feb 1, 2019 by Hui_Ma

Hello !


Do I understand right and for the same GPIO pin, LLWU and GPIO digital pins totally independent ?


If LLWU filter is set, Falling edge detection is postponed for ~ 5ms ( 5 clocks) maximum.

It means when pin will be low, LLWU interrupt is happens and MCU can continue with Low state detection on 

GPIO pin. If GPIO digital filter is set to 100 and clocked by LPO, GPIO interrupts happens only when external line will have stable low signal while 100 ms.


Can it work like this ? 

LLWU pins supports only edge detection, and if filter applied it means low/high state should be stable for ~ 5 ms.

Is this so ?


Please clarify.