2025-05-07 12:15 PM
Are the steps followed for RTC calibration the same for crystal and temperature variation?
How is the calibration register value selected for temperature variation?
2025-05-07 12:30 PM
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.