STC3115 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

View to exact match

STC3115

Gas gauge IC with alarm output for handheld applications

STMicroelectronics 

I2C interface

STC3115

7.2.2

Register description

Values held in consecutive registers (such as the charge value in the REG_SOC register

pair) are stored with high bits in the first register and low bits in the second register. The

registers must be read with a single I2C access to ensure data integrity. It is possible to read

multiple values in one I2C access. All values must be consistent.

The SOC data are coded in binary format and the LSB of the low byte is 1/512 %. The

battery current is coded in 2’s complement format and the LSB value is 5.88 uV. The battery

voltage is coded in 2’s complement format and the LSB value is 2.20 mV. The temperature

is coded in 2’s complement format and the LSB value is 1°C.

Name

VMODE

CLR_VM_ADJ

CLR_CC_ADJ

ALM_ENA

GG_RUN

FORCE_CC

FORCE_VM

Table 13. REG_MODE - address 0

Position Type Def.

Description

0

R/W

1

0: Mixed mode (Coulomb counter active)

1: Power saving voltage mode

Write 1 to clear ACC_VM_ADJ and

1

R/W

0 REG_VM_ADJ.

Auto clear bit if GG_RUN = 1

2

R/W

0

Write 1 to clear ACC_CC_ADJ and REG_CC_ADJ

Auto clear bit if GG_RUN = 1

Alarm function

3

R/W

1 0: Disabled

1: Enabled

0: Standby mode. Accumulator and counter

4

R/W

0

registers are frozen, gas gauge and battery

monitor functions are in standby.

1: Operating mode.

Forces the mixed mode relaxation timer to switch

5

R/W

0

to the Coulomb counter mode.

Write 1, self clear to 0

Relaxation counter = 0

Forces the mixed mode relaxation timer to switch

6

R/W

0

to voltage gas gauge mode.

Write 1, self clear to 0

Relaxation counter = Relax_max

7

Unused

24/31

DocID023755 Rev 4

Share Link: