SAM4E power loss recognition

Discussion around product based on ARM Cortex M4 core.

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SAM4E power loss recognition

Mon Jan 23, 2017 9:10 pm


i'm working on a custom board with a SAM4E16C.
I would need to recognise if the supply voltage drops to go into backup mode and i'm not sure how to do this.
I have 3V3 on ADVREF and the supply voltage on PA17 (AFE0_AD0 pin), how do i configure the AFEC to go to backup mode when voltage drops? Is there another way?

I'm very thankful for any help!

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