Pull-Up Resistor

Detailed Explanation of RS-485 Pull-Up and Pull-Down Resistors Selection

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Detailed Explanation of RS-485 Pull-Up and Pull-Down Resistors Selection

The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, we often encounter the question of whether to add pull-up and pull-down resistors and what size of resistors is appropriate. Below, we will conduct a detailed analysis of these issues. 1. Why Are Pull-Up and Pull-Down Resistors Needed? 1. … Read more

Don’t Get Trapped by IIC Bus!

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Don't Get Trapped by IIC Bus!

1. Understanding I2C Communication Many friends often feel confused when developing the IIC communication protocol. On one hand, it’s normal to forget related knowledge if it hasn’t been used for a long time. However, it can be quite troublesome to keep looking at the communication timing diagrams, such as the starting level conditions, stopping level … Read more