What does i2c mean?
I2C is a commonly used serial communication protocol widely used for data communication between devices in digital circuits. This article will introduce in detail the meaning, working principle and application of I2C.
I2C, the full name of Inter-Integrated Circuit, is a serial communication protocol developed by Philips in the 1980s. I2C is commonly used to connect devices in digital circuits, such as sensors, memories, digitizers, real-time clocks, etc. The main feature of the I2C protocol is that it supports multi-device connection and only uses two signal lines: a clock line (SCL) and a data line (SDA).
The I2C protocol works as follows: On the I2C bus, each device has a unique address. Communication begins by sending a start signal from the master device (such as a microcontroller), followed by the address of the device to be communicated with. Next, the master device and the communicated device perform data transmission through the clock line and data line. During the data transmission process, the clock line is controlled by the master device, and the data line is alternately controlled by the master device and the communicated device. When the communication ends, the master device sends a stop signal.
The I2C protocol is widely used in digital circuits. For example, the sensor can transmit the collected data to a microcontroller or microcontroller through the I2C interface to achieve automated control; the real-time clock module can communicate with the computer or microcontroller through the I2C interface to achieve time synchronization; the digital converter can The I2C interface converts analog signals into digital signals to implement functions such as data acquisition and processing.
In addition, the I2C protocol is also widely used in the control and communication of various digital devices, such as LCD screens, electronic labels, LED drivers, etc. In fields such as embedded systems and the Internet of Things, the I2C protocol is also an important communication standard.
In short, I2C is a commonly used serial communication protocol. It has the characteristics of supporting multiple device connections and simple signal lines. It is widely used in the communication and control of digital circuits and various digital devices.