RM0090: Reference manual - STMicroelectronics

Analog-to-digital converter (ADC) RM0090
Figure 51. Alternate + regular simultaneous
ADC1 reg CH0 CH1 CH2
ADC1 inj
CH0
ADC2 reg
ADC2 inj
If a trigger occurs during an injected conversion that has interrupted a regular conversion, it
is ignored. Figure 52 shows the behavior in this case (2nd trigger is ignored).
Figure 52. Case of trigger occurring during injected conversion
1st trigger
3rd trigger
11.10 Temperature sensor
The temperature sensor can be used to measure the ambient temperature (TA ) of the
device.
The temperature sensor is internally connected to the ADC1_IN16 input channel which is
used to convert the sensor’s output voltage to a digital value.
Figure 53 shows the block diagram of the temperature sensor.
When not in use, the sensor can be put in power down mode.
Note: The TSVREFE bit must be set to enable the conversion of both internal channels:
ADC1_IN16 (temperature sensor) and ADC1_IN17 (VREFINT ).
Main features
1st trigger
● Supported temperature range: –40 to 125 °C
● Precision: ±1.5 °C
285/1416 Doc ID 018909 Rev 3
CH2 CH3
CH3 CH5 CH6 CH6 CH7
ADC1 reg CH0 CH1 CH2
ADC1 inj
CH0
ADC2 reg
ADC2 inj
2nd trigger
CH2 CH3
CH3 CH5 CH6 CH6 CH7
2nd trigger
CH0
CH0
CH3 CH4
CH7 CH8
synchro not lost
ai16062
CH3 CH4
CH0
CH7 CH8
2nd trigger
ai16063