STM32F207 RTC Calibration

Nimit Vachhani · ‎2025-06-30

Greetings Everybody,

I have Nucleo-F207ZG board. I want to try RTC feature of this STM32. In past i did try using RTC but after some days the time used to drift and it was like 4 seconds ahead than actual time after on week and after 1 month time was ahead like almost 15 seconds.

If you have any step by step procedure of RTC smooth digital smooth calibration then please share. I have gone through various application notes but i am getting more confused...

Please help me.

Peter BENSCH · ‎2025-06-30

Have you seen this Knowledge Base article?

Regards
/Peter

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mƎALLEm · ‎2025-06-30

Hello,

I think this application note AN2604 "STM32F101xx and STM32F103xx RTC calibration" can help you.

See also: How to calibrate the STM32's real-time clock (RTC)

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