ST STM32F101 series Reference Manual

Analog-to-digital converter (ADC) RM0008
241/1128 DocID13902 Rev 15
Bit 15 JEXTTRIG: External trigger conversion mode for injected channels
This bit is set and cleared by software to enable/disable the external trigger used to start
conversion of an injected channel group.
0: Conversion on external event disabled
1: Conversion on external event enabled
Bits 14:12 JEXTSEL[2:0]: External event select for injected group
These bits select the external event used to trigger the start of conversion of an injected
group:
For ADC1 and ADC2 the assigned triggers are:
000: Timer 1 TRGO event
001: Timer 1 CC4 event
010: Timer 2 TRGO event
011: Timer 2 CC1 event
100: Timer 3 CC4 event
101: Timer 4 TRGO event
110: EXTI line15/TIM8_CC4 event (TIM8_CC4 is available only in high-density and XL-
density devices)
111: JSWSTART
For ADC3 the assigned triggers are:
000: Timer 1 TRGO event
001: Timer 1 CC4 event
010: Timer 4 CC3 event
011: Timer 8 CC2 event
100: Timer 8 CC4 event
101: Timer 5 TRGO event
110: Timer 5 CC4 event
111: JSWSTART
Bit 11 ALIGN: Data alignment
This bit is set and cleared by software. Refer to Figure 27.and Figure 28.
0: Right Alignment
1: Left Alignment
Bits 10:9 Reserved, must be kept at reset value.
Bit 8 DMA: Direct memory access mode
This bit is set and cleared by software. Refer to the DMA controller chapter for more details.
0: DMA mode disabled
1: DMA mode enabled
Only ADC1 and ADC3 can generate a DMA request.
Bits 7:4 Reserved, must be kept at reset value.
Bit 3 RSTCAL: Reset calibration
This bit is set by software and cleared by hardware. It is cleared after the calibration registers
are initialized.
0: Calibration register initialized.
1: Initialize calibration register.
Note: If RSTCAL is set when conversion is ongoing, additional cycles are required to clear the
calibration registers.

ST STM32F101 series Specifications

General

Brand	ST
Model	STM32F101 series
Category	Computer Hardware
Language	English