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Analog-to-digital converter (ADC)
RM0008
Bits 4:0 AWDCH[4:0]: Analog watchdog channel select bits
These bits are set and cleared by software. They select the input channel to be guarded by
the Analog watchdog.
00000: ADC analog input Channel0
00001: ADC analog input Channel1
....
01111: ADC analog input Channel15
10000: ADC analog input Channel16
10001: ADC analog input Channel17
Other values reserved.
Note: ADC1 analog inputs Channel16 and Channel17 are internally connected to the
temperature sensor and to V REFINT , respectively.
ADC2 analog inputs Channel16 and Channel17 are internally connected to V SS .
ADC3 analog inputs Channel9, Channel14, Channel15, Channel16 and Channel17 are
connected to V SS .
11.12.3
ADC control register 2 (ADC_CR2)
Address offset: 0x08
Reset value: 0x0000 0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
TSVRE
FE
SWST
ART
JSWST
ART
EXTT
RIG
EXTSEL[2:0]
Res.
Res.
rw
rw
rw
rw
rw
rw
rw
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
JEXTT
RIG
JEXTSEL[2:0]
ALIGN
Reserved
DMA
Reserved
RST
CAL
CAL
CONT
ADON
rw
rw
rw
rw
rw
Res.
rw
Res.
rw
rw
rw
rw
Bits 31:24
Reserved, must be kept cleared.
Bit 23 TSVREFE : Temperature sensor and V REFINT enable
This bit is set and cleared by software to enable/disable the temperature sensor and V REFINT
channel. In devices with dual ADCs this bit is present only in ADC1.
0: Temperature sensor and V REFINT channel disabled
1: Temperature sensor and V REFINT channel enabled
Bit 22 SWSTART : Start conversion of regular channels
This bit is set by software to start conversion and cleared by hardware as soon as conversion
starts. It starts a conversion of a group of regular channels if SWSTART is selected as trigger
event by the EXTSEL[2:0] bits.
0: Reset state
1: Starts conversion of regular channels
Bit 21 JSWSTART : Start conversion of injected channels
This bit is set by software and cleared by software or by hardware as soon as the conversion
starts. It starts a conversion of a group of injected channels (if JSWSTART is selected as
trigger event by the JEXTSEL[2:0] bits.
0: Reset state
1: Starts conversion of injected channels
222/995
Doc ID 13902 Rev 9
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