KL25Z can't wake up from VLLSx mode

[seanwu]

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 · Accepted solution]

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:

http://cache.freescale.com/files/32bit/software/KL25_SC.exe

Wish it helps.

Best regards,

Ma Hui