Hi all,
We are using a STM32WB5MMG uC in one of our products and we just happened to see in its datasheet that the secondary crystal frequency is 32.774 kHz, instead of the common 32.768 kHz, is that right?
We are using the internal RTC clocked by the LSE to keep real time in the device and thus we would like to have the least amount of drift, within the crystal manufacturing tolerance.
If that is the case, then I understand a soft calibration of the RTC is needed to account for the +183 ppm with respect to the 32.768 kHz, correct?
By the way, our project is based on the SBSFU+SecureBin+BLE OTA demo project. Is it possible that these already compensate for that?
Thank you all
