ST STM32F207 series User Manual

Analog-to-digital converter (ADC) RM0033
234/1381 RM0033 Rev 9
Figure 43. Alternate trigger: 4 injected channels (each ADC) in discontinuous mode
Triple ADC mode
• When the 1st trigger occurs, all injected ADC1 channels in the group are converted.
• When the 2nd trigger occurs, all injected ADC2 channels in the group are converted.
• When the 3rd trigger occurs, all injected ADC3 channels in the group are converted.
• and so on
A JEOC interrupt, if enabled, is generated after all injected ADC1 channels in the group
have been converted.
A JEOC interrupt, if enabled, is generated after all injected ADC2 channels in the group
have been converted.
A JEOC interrupt, if enabled, is generated after all injected ADC3 channels in the group
have been converted.
If another external trigger occurs after all injected channels in the group have been
converted then the alternate trigger process restarts by converting the injected ADC1
channels in the group.
Figure 44. Alternate trigger: injected group of each ADC
10.9.5 Combined regular/injected simultaneous mode
It is possible to interrupt the simultaneous conversion of a regular group to start the
simultaneous conversion of an injected group.
Note: In combined regular/injected simultaneous mode, one must convert sequences with the
same length or ensure that the interval between triggers is longer than the long conversion
time of the 2 sequences (Dual ADC mode) /3 sequences (Triple ADC mode). Otherwise, the
ADC1
ADC2
1st trigger
Conversion
Sampling
2nd trigger
3rd trigger
4th trigger
5th trigger
6th trigger
7th trigger
8th trigger
JEOC on ADC2
JEOC on ADC1
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ADC1
ADC2
1st trigger
Conversion
Sampling
2nd trigger
4th trigger
3rd trigger
(n)th trigger
(n+1)th trigger
EOC, JEOC
on ADC1
EOC, JEOC
on ADC1
. . .
EOC, JEOC
on ADC2
EOC, JEOC
on ADC3
5th trigger
(n+2)th trigger
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ST STM32F207 series Specifications

General

Brand	ST
Model	STM32F207 series
Category	Microcontrollers
Language	English