It´s possible to stay in Very Low Leakage Mode more than 1 minute?

[isaacromero]

It´s possible to stay in Very Low Leakage Mode more than 1 minute? using the Wake-Up Interruption of LPTMR0 ?

frdm-kl43z‌kl27z VLLS1‌ power modes 

[kerryzhou · Accepted solution]

Hi Isaac Romero,

    What the VLLS mode you are using? If you are using VLLS1/3, you can use the LPTMR with 1khz LPO as the wake up source to make the VLLS1/3 more than 1minute.

    You can choose LPO as LPTMR clock source.

Then, from the LPTMR register:

CMR is 16 bit, it is 65536, so you can reach:65536*1ms=65.536s intervals.

so you can reach 60s =1minute.

Wish it helps you!

Have a great day,
Kerry

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[isaacromero]

Hello my friend, kerryzhou

I will try to reach it with the CMR but it will be a cycle from VLLS1-Run-VLLS1. I was trying to avoiding it(many cycles to stay more time in stop mode).

VLLS1 resets the systems after WakeUp, but what I want is to stay about 20 minutes sleep and return to RunMode without resets, what I fond was using LLS1.  

Thanks!

Isaac Romero