ST STM32F10 Series User Manual

Analog/digital converter (ADC) UM0306
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Figure 177. Slow interleaved mode on 1 channel
19.10.5 Alternate trigger mode
This mode can be started only on an injected channel group. The source of external trigger
comes from the injected group mux of ADC1.
● When the 1st trigger occurs, all injected group channels in ADC1 are converted.
● When the 2nd trigger arrives, all injected group channels in ADC2 are converted
● and so on....
A JEOC interrupt, if enabled, is generated after all injected group channels of ADC1 are
converted.
A JEOC interrupt, if enabled, is generated after all injected group channels of ADC2 are
converted.
If another external trigger occurs after all injected group channels have been converted then
the alternate trigger process restarts by converting ADC1 injected group channels.
Figure 178. Alternate trigger: injected channel group of each ADCl
If the injected discontinuous mode is enabled for both ADC1 and ADC2:
● When the 1st trigger occurs, the first injected channel in ADC1 is converted.
● When the 2nd trigger arrives, the first injected channel in ADC2 are converted
● and so on....
A JEOC interrupt, if enabled, is generated after all injected group channels of ADC1 are
converted.
A JEOC interrupt, if enabled, is generated after all injected group channels of ADC2 are
converted.
If another external trigger occurs after all injected group channels have been converted then
the alternate trigger process restarts.
CH0
ADC2
ADC1
Trigger
End of conversion on ADC1
Conversion
Sampling
14 ADCCLK
cycles
28 ADCCLK
cycles
CH0
CH0
CH0
End of conversion on ADC2
ADC1
ADC2
1st trigger
Conversion
Sampling
2nd trigger
3rd trigger
4th trigger
(n)th trigger
(n+1)th trigger
EOC, JEOC
on ADC1
EOC, JEOC
on ADC1
. . .
EOC, JEOC
on ADC2
EOC, JEOC
on ADC2
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ST STM32F10 Series Specifications

General

Brand	ST
Model	STM32F10 Series
Category	Microcontrollers
Language	English