BQ25872 Datasheet, PDF (48/68 Pages) Texas Instruments – Battery Switch Charger

bq25872
SLUSCQ6 – OCTOBER 2016
www.ti.com
8.5.25 REG1B and REG1C (VBAT_ADC)
Figure 44. REG1B and REG1C (VBAT_ADC)
REG1B
REG1C
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 26. REG1B and REG1C (VBAT_ADC)
Register Bit Field
7 VBAT_POL
REG1B
REG1C
6 VBAT_ADC[14]
5 VBAT_ADC[13]
4 VBAT_ADC[12]
3 VBAT_ADC[11]
2 VBAT_ADC[10]
1 VBAT_ADC[9]
0 VBAT_ADC[8]
7 VBAT_ADC[7]
6 VBAT_ADC[6]
5 VBAT_ADC[5]
4 VBAT_ADC[4]
3 VBAT_ADC[3]
2 VBAT_ADC[2]
1 VBAT_ADC[1]
0 VBAT_ADC[0]
Reset
Type
Description
REG_RST Watchdog
EN
Indicates polarity of VBUS voltage. Always
R
Y
N
Y
positive.
0 - positive voltage
1 - negative voltage
R
Y
N
Y
16384 mV Voltage representation of ADC
R
Y
N
Y
8192 mV
conversion of VBAT voltage.
Range: 2.048 V to 6.140 V
R
Y
N
Y
4096 mV Default: 0 V (0000000000000000)
R
Y
N
Y
2048 mV
R
Y
N
Y
1024 mV
R
Y
N
Y
512 mV
R
Y
N
Y
256 mV
R
Y
N
Y
128 mV
R
Y
N
Y
64 mV
R
Y
N
Y
32 mV
R
Y
N
Y
16 mV
R
Y
N
Y
8 mV
R
Y
N
Y
4 mV
R
Y
N
Y
2 mV
R
Y
N
Y
1 mV
48
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