Analog-to-digital converter (ADC) RM0367
350/1043 RM0367 Rev 7
14.12.11 ADC common configuration register (ADC_CCR)
Address offset: 0x308
Reset value: 0x0000 0000
Bits 31:7 Reserved, must be kept at reset value.
Bits 6:0 CALFACT[6:0]: Calibration factor
These bits are written by hardware or by software.
– Once a single-ended inputs calibration is complete, they are updated by hardware with the
calibration factors.
– Software can write these bits with a new calibration factor. If the new calibration factor is different
from the current one stored into the analog ADC, it is then applied once a new single-ended
calibration is launched.
– Just after a calibration is complete, DATA[6:0] contains the calibration factor.
Note: Software can write these bits only when ADEN=1 and ADSTART=0 (ADC is enabled and no
calibration is ongoing and no conversion is ongoing).
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. LFMEN
VLCD
EN
TSEN
VREF
EN
PRESC[3:0] Res. Res.
rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
Bits 31:26 Reserved, must be kept at reset value.
Bit 25 LFMEN: Low Frequency Mode enable
This bit is set and cleared by software to enable/disable the Low Frequency Mode.
It is mandatory to enable this mode the user selects an ADC clock frequency lower than 3.5 MHz
0: Low Frequency Mode disabled
1: Low Frequency Mode enabled
Note: The software is allowed to write this bit only when ADSTART = 0 (which ensures that no
conversion is ongoing.
Bit 24 VLCDEN: V
LCD
enable
This bit is set and cleared by software to enable/disable the V
LCD
reading circuitry.
0: V
LCD
reading circuitry disabled
1: V
LCD
reading circuitry enabled
Note: Software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion
is ongoing).
Bit 23 TSEN: Temperature sensor enable
This bit is set and cleared by software to enable/disable the temperature sensor.
0: Temperature sensor disabled
1: Temperature sensor enabled
Note: Software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion
is ongoing).
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