STC3100 Datasheet, PDF (14/21 Pages) STMicroelectronics – Battery monitor IC with Coulomb counter/gas gauge

I2C interface
STC3100
8.2
Register map
The register space provides 12 control registers, 8 read-only (factory OTP) registers for
unique device ID and 32 read/write general-purpose RAM registers. Mapping of all registers
is shown in Table 9. Detailed descriptions of registers 0 (REG_MODE) and 1 (REG_CTRL)
are shown in Table 10 and Table 11. All registers are reset to default values at power-on or
reset, and the PORDET bit in register REG_CTRL is used to indicate the occurrence of a
power-on reset.
Table 9. Register map
Name
Control registers
REG_MODE
REG_CTRL
REG_CHARGE_LOW
REG_CHARGE_HIGH
REG_COUNTER_LOW
REG_COUNTER_HIGH
REG_CURRENT_LOW
REG_CURRENT_HIGH
REG_VOLTAGE_LOW
REG_VOLTAGE_HIGH
REG_TEMPERATURE_LOW
REG_TEMPERATURE_HIGH
Device ID registers
REG_ID0
REG_ID1
REG_ID2
REG_ID3
REG_ID4
REG_ID5
REG_ID6
REG_ID7
RAM registers
REG_RAM0
...
REG_RAM31
Address
(decimal)
0 to 23
0
1
2
3
4
5
6
7
8
9
10
11
24 to 31
24
25
26
27
28
29
30
31
32 to 63
32
...
63
Type
Description
R/W Mode register
R/W Control and status register
R Gas gauge charge data, bits 0-7
R Gas gauge charge data, bits 8-15
R Number of conversions, bits 0-7
R Number of conversions, bits 8-15
R Battery current value, bits 0-7
R Battery current value, bits 8-15
R Battery voltage value, bits 0-7
R Battery voltage value, bits 8-15
R Temperature value, bits 0-7
R Temperature value, bits 8-15
R Part type ID = 10h
R Unique part ID, bits 0-7
R Unique part ID, bits 8-15
R Unique part ID, bits 16-23
R Unique part ID, bits 24-31
R Unique part ID, bits 32-39
R Unique part ID, bits 40-47
R Device ID CRC
R/W General-purpose RAM register 0
...
R/W General-purpose RAM register 31
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