The I2C Bus has five operating speed categories. And it’s considered the most efficient serial communication bus in terms of the number of IO pins needed to establish a communication network of multiple devices. Each device has a unique ID that others can use to directly address that specific device. The I2C is a multi-master multi-slave protocol that supports a large number of devices on the same 2-wire bus. Hence the name, TWI ( Two- Wire Interface). It consists of 2 pins only (one for serial data and one for the serial clock). I 2C, I2C, or IIC ( Inter- Integrated Circuit) is a very popular serial communication protocol that’s widely used by different sensors and modules in embedded systems.
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