Measure STM32F373 core temperature

[BPutt.1]

Hi,

I was measuring the STM32F373 core temperature.
It seems that the core is 56°C while the environment is 23°C, no housing.
Is the 56°C a reasonable temperature? It looks quite high to me.
I used the settings below:

[waclawek.jan]

Internal temperature is always higher than the ambient, and depends on the particularities of your application (clock frequency, number of active modules, load on GPIOs, etc.). However, +33deg.C is a tad bit more than expected.

Have you performed calibration before starting AD conversions, as outlined in the Calibration subchapter of ADC chapter RM?

Some other tips for this case here.

JW