Comparator function possible in deep sleep or power down modes?

[lpcware]

Content originally posted in LPCWare by jdesbonnet on Mon Sep 22 17:24:31 MST 2014
Looking at the LPC800 datasheet and trying some experiments it seems that the comparator cannot function in deep sleep or power down modes: am I correct about this?

(I'd like to wake the device from deep sleep or power down by connecting the comparator output to a PIO pin via the switchmatrix and enabling a interrupt on that pin.)

Thanks,
Joe.

[lpcware]

Content originally posted in LPCWare by jdesbonnet on Tue Sep 23 01:29:06 MST 2014
The problem is that the wakeup signal is from a source that generates a pulse of about 200mV above ground. So (I think) only the comparator can detect that unless I resort to additional external components. Joe.

[lpcware]

Content originally posted in LPCWare by LabRat on Mon Sep 22 17:47:01 MST 2014

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Quote: jdesbonnet
Looking at the LPC800 datasheet and trying some experiments it seems that the comparator cannot function in deep sleep or power down modes: am I correct about this?

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Would suggest to use WAKEUP:

UM:

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Quote:

In Deep power-down only the WAKEUP pin PIO0_4 is functional.

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