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33907 wake up problem

Question asked by liu jinhang on Aug 25, 2016
Latest reply on Aug 25, 2016 by Tomas Vaverka


I have a question about 33907 wake up machanism. see below:

precondition is IO_0 has been configured to be "rising edge wake up 33907".

if MCU program will make 33907 go to sleep by sending an "go to sleep" SPI command. but at this time IO_0 has been high state. 

if the IO_0 high state maintains, can 33907 be wake up?    if 33907 can not be wake up, how can we do to confirm every time of going into sleep mode can be wake up by an rising edge of IO_0.

from up figure, we can see MCU program cannot make sure send "go to sleep" command of SPI before IO_0 rising edge.