S12 / MagniV MicrocontrollersのトピックRe: Wake up from STOP mode

Wake up from STOP mode

guofeng — Mon, 04 Dec 2017 03:01:00 GMT

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 — Mon, 04 Dec 2017 14:32:45 GMT

Hi,

Please refer to MM912F634 errata:

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

Regards,

Daniel

guofeng — Wed, 06 Dec 2017 01:14:36 GMT

Hi,

Thank you very much, I got what I need.

Best regards,

Guofeng Lai