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Recovery from VLLS0 in KW21Z

Question asked by tomofumiyasuda on Jan 25, 2017
Latest reply on Feb 12, 2017 by Jorge Antonio Alcala Vazquez

I have a problem about recovery from VLLS0(Very Low Leakage Stop0) in KW21Z. Only when I configured GPIOs except for wake up pin as output ports before entering VLLS0, MCU can't recover from VLLS0 by wake up pin. In the case of configuring GPIOs as output ports, it is successful when adding GPIOs configuration before clearing ACKISO after recovery. But, RCM_SRS0(System Reset Status Register 0) register value was 0x00 not 0x01(WAKEUP bit is one). I have no idea that how can I get one value(WAKEUP bit) when I configure GPIOs as output. Do you have any ideas?

 

Best Regards,

Tom

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