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Is PN5180 VHDF output sufficient for K81 LLWU input? 

Question asked by Denis Collis on Dec 7, 2018
Latest reply on Dec 7, 2018 by Denis Collis

I want to use the PN5180's Zero Power Wakeup feature to interrupt/wake-up the K8x.  The theory appears to be that energy from, say, a smart phone NFC is received by the PN5180's antenna and sent directly out the VDHF pin.

 

The question is whether the PN5180's VDHF output can be directly connected to the K8x's LLWU input, or if the VHDF output signal must first be conditioned by some device, like a comparator with push-pull output, to provide sufficient power to trip the LLWU?

 

For simplicity of design I would favor the direct option, if it works!

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