Analog-to-digital converter (ADC) RM0008
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10.12.3 ADC control register 2 (ADC_CR2)
Address offset: 0x08
Reset value: 0x0000 0000
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
.
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
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