AnsweredAssumed Answered

Exit LLS mode problem

Question asked by henry xin on Jul 31, 2015
Latest reply on Sep 11, 2015 by Marek Neuzil

Hi there,


I am testing with KL25Z board about the LLS mode.

and have a question about wake-up the core from Low power modes.

The document <<Using Low Power modes on Kinetis family>>(AN4470) explains that from LLS to Run mode, the trigger condition is "

Wakeup from enabled LLWU pin or module source or Reset pin" at table 6. How to enter LLS mode.

But in the demo chapter, Low power exit modes:

External pin SW2 has been enabled to wake up via the LLWU from any LLS and VLLSx mode, all wakeup

interrupts from these modes must go through LLWU_ISR.


Is there a conflict about these description of exiting the LLS mode?

"Enable LLWU pin" is not equal to "enable LLWU interrupt", such as:


Or is there anything I misunderstand about LLWU?




Henry Xin