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J
J_Thomas
Associate
May 7, 2025
Question

RTC calibration for temperature variations

  • May 7, 2025
  • 1 reply
  • 250 views

Are the steps followed for RTC calibration the same for crystal and temperature variation?

How is the calibration register value selected for temperature variation?

1 reply

TDK
TDK
Super User
May 7, 2025

There is only one way to calibrate LSE--the method outlined in your previous post.

If temperature is frequently changing and this drives changes to the crystal, you can re-calibrate every so often. The internal temperature channel can be used to monitor swings in temperature.

The relationship is typically nonlinear.

TDK_0-1746646239329.png

 

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