SLUSEC9B October 2020 – July 2024 BQ25618E , BQ25619E
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. I2CTM is a bi-directional 2-wire serial interface developed by Philips Semiconductor (now NXP Semiconductors). Only two 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 the 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 6AH, receiving control inputs from the master device like micro controller or a digital signal processor through REG00-REG0C. Register read beyond REG0C returns 0xFF. The I2C interface supports both Standard Mode (up to 100 kbits), and Fast Mode (up to 400 kbits), connecting to the positive supply voltage via a current source or pullup resistor. When the bus is free, both lines are HIGH. The SDA and SCL pins are open drain.