STC3100 Datasheet, PDF (13/21 Pages) STMicroelectronics – Battery monitor IC with Coulomb counter/gas gauge

STC3100
I2C interface
Figure 8. Read operation
Master
Slave
Start Device addr W A Reg address A Restart Device addr R A Reg data A Reg data A Reg data _A
7 bits
8 bits
7 bits
8 bits
8 bits
8 bits
Start bit = SDA falling when SCL = 1
Stop bit = SDA rising when SCL = 1
Restart bit = start after a start
Acknowledge = SDA forced low during a SCL clock
Address
n+1
Address
n+2
Stop
AM00833
Figure 9. Write operation
Start Device addr W A Reg address A Reg data A Reg data A Reg data A Stop
7 bits
8 bits
8 bits
8 bits
8 bits
Start bit = SDA falling when SCL = 1
Stop bit = SDA rising when SCL = 1
Restart bit = start after a start
Address
n+1
Address
n+2
AM00834
13/21