I2c Overview Official

Uses a Serial Data Line ( SDA ) and a Serial Clock Line ( SCL ).

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

SDA and SCL are connected to a voltage source via pull-up resistors, allowing devices to pull the lines low without creating short circuits. I2C Overview

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

Multiple masters can control the same slave, and multiple slaves can reside on the same bus. Uses a Serial Data Line ( SDA )

The master releases the SDA line to high while SCL is high, signaling the end of transmission. Advantages and Limitations Understanding I2C

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. I2C communication is master-controlled

The master sends the 7-bit unique address of the target slave, followed by a R/W bit (0 for write, 1 for read).