Application of I2C bus devices in high anti-interference systems: Abstract: This article first briefly describes the I2C bus protocol, then introduces some common anti-interference measures, and finally provides a high anti-interference application solution using the I2C bus device 24WC01. 1. Overview of I2C bus The I2C bus is a two-wire serial bus that provides a small network system for the circuits on the bus to share a common bus. The devices on the bus include microcontrollers, LCD drivers, and E2PROM devices. Models include: PCF8566T, SAA1064T, 24WC01, etc. Among the two bidirectional lines, one is the serial data line (SDA) and the other is the serial clock line (SCL). Data transmission between the bus and the device is completed by this line. Each device has a unique address to distinguish other devices on the bus. When performing data transmission, who is the master device and who is the slave device is detailed in Table 1. The master device is the device that starts data transmission and generates a clock signal. Any device that is addressed can be regarded as a slave device. The I2C bus is a multi-master bus, meaning that two or more devices capable of controlling the bus can be connected to the bus.
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