What's the difference between EXTI 19 and RCC NMI IRQ

[Clonimus74]

Posted on October 17, 2017 at 13:19

I use STM32L476.

Seems both EXTI 19 and RCC NMI IRQ are related to CSS (clock security interrupt), can someone tell me what's the difference?

[Clonimus74]

Posted on October 17, 2017 at 13:24

I think I found it:

EXTI 19 relates to LSE CSS

RCC NMI relates to the main clock CSS

[waclawek.jan]

Posted on October 17, 2017 at 14:05

Another item which ought to be in the Peripherals interconnect matrix chapter...

JW