SLVSDU0B September 2017 – September 2019 BQ25910
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The device uses I2C compatible interface for flexible charging parameter programming and instantaneous device status reporting. I2C is a bi-directional 2-wire serial interface. Only two open-drain bus lines are required: a serial data line (SDA), and a serial clock line (SCL). Devices can be considered as masters or slaves when performing data transfers. A master is a device which initiates a data transfer on the bus and generates the clock signals to permit that transfer. At that time, any device addressed is considered a slave.
The device operates as a slave device with address 4BH, receiving control inputs from the master device like micro-controller or digital signal processor through REG00-REG0D. Register read beyond REG0D (0x0D) returns 0xFF. The I2C interface supports both standard mode (up to 100 kbits/s), and fast mode (up to 400 kbits/s). When the bus is free, both lines are HIGH. The SDA and SCL pins are open drain and must be connected to the positive supply voltage via a current source or pull-up resistor.