I2c Overview Official

The master pulls the SDA line low while SCL remains high.

I2C communication is master-controlled. The master initiates, manages, and terminates communication, generating the clock signal. I2C Overview

I2C (Inter-Integrated Circuit), often pronounced "eye-squared-see" or "eye-two-see," is a popular, synchronous, multi-master/multi-slave communication protocol invented in 1982 by Philips Semiconductors (now NXP). It is used for short-distance, intra-board communication between a processor and low-speed peripherals such as sensors, LCDs, and memory chips. Its hallmark is using only two wires for communication, making it highly efficient for managing multiple devices on a single bus. The master pulls the SDA line low while SCL remains high

Multiple masters can control the same slave, and multiple slaves can reside on the same bus. and terminates communication