Wake up from STOP mode

[guofeng]

Hi,

    I am working with the MM912F634. I want to entry STOP mode to reduce current consumption, and wake up from L0 input. My code as following:

...

WCR = 1;                     // Enable the L0 wake-up

asm ADNCC #0x6F;    // Enable the STOP mode

MCR = 1;                     // Set the Analog Die transition to Stop mode.

asm STOP;                  // MCU entry Stop mode.

...

the program did work after "asm STOP". but after changing the L0 input level, the device always reset , then entry Stop mode again.

     I am appreciate if you could give me some advice.

Best regards,

Guofeng Lai

[danielmartynek · Accepted solution]

Hi,

Please refer to MM912F634 errata:

Stop Mode Wake-up generating Reset and rising WUR bit into RSR register.

https://www.nxp.com/docs/en/errata/MM912F634ER.pdf

Regards,

Daniel

[guofeng]

Hi,

   Thank you very much, I got what I need.

Best regards,

Guofeng Lai