How to backup data of RTC module MKE04?

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How to backup data of RTC module MKE04?

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chunghusttdh
Contributor I

When I set date and time, the RTC module running normally, but I reset MCU, date and time also reset :smileysad:. Let me ask if I have something missing?? Thank you!

 

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495 次查看
miduo
NXP Employee
NXP Employee

Hello,

You did not mention that what your RTC configuration. Actually MKE04 has no backup power domain and requires the processor to remain powered in a very low leakage state, usually using a low power 32Khz oscillator rather than crystal. That is to say you need to use a low leakage mode instead of power off to keep the processor powered that will keep the RTC data.

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495 次查看
chunghusttdh
Contributor I

help me :smileysad: 

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