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HomeHomework HelpelectronicsI2C Bus

I2C Bus

A synchronous serial two-wire bus used for communication between integrated circuits over short distances, allowing for data transmission between a master device and one or more slave devices, with a shared bus clock and serial data line

intermediate
2 hours
Electronics
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Overview

I2C, or Inter-Integrated Circuit, is a widely used communication protocol that allows multiple devices to connect and communicate using only two wires. This simplicity makes it ideal for various applications, such as connecting sensors and microcontrollers in embedded systems. Understanding I2C is e...

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Key Terms

I2C
A two-wire communication protocol for connecting devices.

Example: I2C is commonly used in sensors and microcontrollers.

Master
The device that initiates communication on the I2C bus.

Example: A microcontroller can act as the master in an I2C setup.

Slave
A device that responds to the master's requests on the I2C bus.

Example: A temperature sensor can be a slave device.

Addressing
The method of assigning unique identifiers to devices on the I2C bus.

Example: Each I2C device has a unique 7-bit address.

Data Frame
A structured format for transmitting data over the I2C bus.

Example: A data frame includes the address and the data byte.

Clock Signal
A signal used to synchronize data transmission between devices.

Example: The master generates the clock signal for the I2C bus.

Related Topics

SPI Communication
A faster communication protocol that uses more wires than I2C.
intermediate
UART Protocol
A serial communication protocol used for long-distance communication.
intermediate
Microcontroller Basics
Fundamentals of microcontrollers, essential for understanding I2C applications.
beginner

Key Concepts

Two-wire communicationMaster-slave configurationData transfer speedDevice addressing