Posted on July 09, 2017 at 16:27In RM0390, the Reference Manual for STM32F446xx MCUs, on page 379, Section 13.10 Temperature sensor
The formula given is
TempC = ((Vsense - V25) / Avg_Slope) + 25
In the STM32F446xC/E Data Sheet, page 147, Section 6.3.22 Temperature sensor characteristics, calibration registers are provided TS_CAL1 and TS_CAL2
Please update the reference manual to reflect the availability of those registers as the revised formula provides better results
TempC = ((110C - 30C) / (TS_CAL2 - TS_CAL1)) * (TS_DATA - TS_CAL1) + 30C
