The TPS65235-1 requires a start condition, a valid I²C address, a register address byte, and a data byte for a single update. After the receipt of each byte, TPS65235-1 device acknowledges by pulling the SDA line low during the high period of a single clock pulse. TPS65235-1 performs an update on the falling edge of the LSB byte.

When the TPS65235-1 is disabled (EN pin tied to ground) the device cannot be updated via the I²C interface.

Figure 7-10 I²C Write Data Format

Figure 7-11 I²C Read Data Format