ST STM32F102 series User Manual

Analog-to-digital converter (ADC) RM0008
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Figure 35. Alternate + Regular simultaneous
If a trigger occurs during an injected conversion that has interrupted a regular conversion, it
will be ignored. Figure 36 shows the behavior in this case (2nd trig is ignored).
Figure 36. Case of trigger occurring during injected conversion
10.9.9 Combined injected simultaneous + interleaved
It is possible to interrupt an interleaved conversion with an injected event. In this case the
interleaved conversion is interrupted and the injected conversion starts, at the end of the
injected sequence the interleaved conversion is resumed. Figure 37 shows the behavior
using an example.
Note: When the ADC clock prescaler is set to 4, the interleaved mode does not recover with
evenly spaced sampling periods: the sampling interval is 8 ADC clock periods followed by 6
ADC clock periods, instead of 7 clock periods followed by 7 clock periods.
Figure 37. Interleaved single channel with injected sequence CH11, CH12
ADC1 reg
CH0 CH1 CH2
CH0
CH2 CH3
CH0
ADC1 inj
ADC2 reg
ADC2 inj
1st trig
2nd trig
synchro not lost
CH3 CH5 CH6 CH6 CH7
CH3 CH4
CH7 CH8
ADC1 reg
CH0 CH1 CH2
CH0
CH2 CH3
CH0
ADC1 inj
ADC2 reg
ADC2 inj
1st trig
4th trig
CH3 CH5 CH6 CH6 CH7
CH3 CH4
CH7 CH8
2nd trig
3rd trig
CH0
CH0
ADC2
ADC1
Tr ig ge r
Conversion
Sampling
CH0 CH0
CH0 CH0 CH0
CH11 CH12
CH12 CH11
CH0 CH0
CH0 CH0

ST STM32F102 series Specifications

General

Brand	ST
Model	STM32F102 series
Category	Microcontrollers
Language	English