topic Re: RTC issue in Kinetis Microcontrollers

RTC issue

durgeshk — Tue, 16 Jan 2018 06:06:08 GMT

Hi,

I'm working on MKL16Z256vlh4 uC , it does not have dedicated vbat pin so how to provide backup voltage when main supply goes off?

Regards

Durgesh

Re: RTC issue

mjbcswitzerland — Tue, 16 Jan 2018 15:11:10 GMT

Hi Durgesh

The KL parts don't have battery backup so you need to use a low leakage mode instead and keep the processor powered. See the following for some more details: http://www.utasker.com/kinetis/KL_RTC.html

Regards

Mark

Free Open Source solution: https://github.com/uTasker/uTasker-Kinetis
Working project in 15 minutes video: https://youtu.be/K8ScSgpgQ6M

Professional Kinetis support, one-on-one training and complete fast-track project solutions: http://www.utasker.com/support.html

Re: RTC issue

kerryzhou — Wed, 17 Jan 2018 06:16:24 GMT

Hi Durgesh,

I agree with Mark, you can refer to the FRDM-KL26 board, just connect the backup voltage to the VDD.

Wish it helps you!

Have a great day,
Kerry

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