topic Re: KL25Z can't wake up from VLLSx mode in Kinetis Microcontrollers

KL25Z can't wake up from VLLSx mode

seanwu — Thu, 11 Jul 2013 02:01:37 GMT

Dear sir,

I use FRDM Kl25Z, and processor expert with CW10.4.

I try to wake up from VLLSx mode via external pins P5, P6, P14, P15.

But it won't go to Cpu_OnLLSWakeUpINT() when I active the external pins.

I also try to wake up frome LLS mode via the external pin.

It could go to Cpu_OnLLSWakeUpINT() when I ative the external pins.

any body coud help me to resolve this issue?

Thanks.

BR,

Sean Wu

Hui_Ma — Thu, 11 Jul 2013 05:36:43 GMT

Hi Sean,

When KL25 enter into LLS or VLLSx low power mode, the GPIO module is static and pins latched.

It need to use LLWU module to wake up the chip from LLS or VLLSx low power mode.

You can download and refer KL25_SC example code about low power mode:

Wish it helps.

Best regards,

Ma Hui