electrical standards

Choosing and Using RS-232, RS-422, and RS-485 Serial Data Standards

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Choosing and Using RS-232, RS-422, and RS-485 Serial Data Standards

Abstract: This article introduces three common serial data standards: RS-232, RS-422, and RS-485, according to their technical specifications and electrical interfaces. It discusses cable termination techniques, the use of multiple loads, RS-232 daisy chain connections, conversion from RS-232 to RS-485, conversion from RS-485 to RS-232, and powering RS-485 conversion from RS-232 ports. Introduction “The wonderful … Read more

Differences Between RS-232 and RS-485

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Differences Between RS-232 and RS-485

Source: ContentCompiled by Semiconductor Industry Observation (ID: icbank) from allaboutcircuits, thank you. Although both standards have long been used for serial communication, RS-485 offers valuable features that RS-232 lacks. Learn more in this article. Any form of communication requires rules to help ensure that everyone stays consistent. In electronics, these rules take the form of … Read more

Understanding the Features and Differences of RS-232, RS-422, and RS-485

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Understanding the Features and Differences of RS-232, RS-422, and RS-485

Click the blue text to followServo and Motion Control Introduction to RS-232, RS-422, and RS-485 Overview of RS232 The RS-232 interface conforms to the interface standard for serial data communication established by the Electronic Industries Alliance (EIA), with the full original designation being EIA-RS-232 (abbreviated as 232 or RS232). It is widely used for connecting … Read more

Detailed Explanation of eMMC Boot Process

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Detailed Explanation of eMMC Boot Process

Recently, the eMMC of the product encountered some issues. In response to these issues, I read the relevant sections of the Embedded Multi-Media Card (eMMC) Electrical Standard (5.1) JESD84-B51 and recorded the eMMC boot process as follows. The above figure shows the eMMC power-on process, with the following steps: 1. Power on VCC and VCCQ, … Read more

Comprehensive Guide to RS-485 Design

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Comprehensive Guide to RS-485 Design

1 Introduction In 1983, the Electronic Industries Association (EIA) approved a new balanced transmission standard known as RS-485. Investigations reveal that RS-485 is highly acclaimed and has been widely applied in industrial, medical, and consumer products, becoming the dominant specification for industrial interfaces. This application report provides design guidelines for engineers who are unfamiliar with … Read more

Understanding RS485: 18 Questions and Answers Explained

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Understanding RS485: 18 Questions and Answers Explained

The RS485 interface consists of a half-duplex network, typically using a two-wire system, often employing shielded twisted pair cables for transmission. This wiring method allows a maximum of 32 nodes to be connected on the same bus in a bus topology. Initially, data was output as an analog signal for simple process quantities, and later, … Read more

Principles and Connections of RS232 to RS422 Conversion

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Principles and Connections of RS232 to RS422 Conversion

Typically, we use serial ports for direct broadcasting and switching control of video servers, recorders, and switchboards, mainly utilizing RS-232, RS-422, and RS-485 interfaces. Below we will discuss the serial port interface standards, usage, and external plugins and cables. The RS-232, RS-422, and RS-485 standards only specify the electrical characteristics of the interfaces, without involving … Read more

In-Depth Analysis of RS232, RS422, and RS485 Serial Ports

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In-Depth Analysis of RS232, RS422, and RS485 Serial Ports

Search on WeChat Technical Training RS-232, RS-422, and RS-485 are all standards for serial data interfaces; Communication issues are similar to traffic issues, with various situations such as high speed, low speed, congestion, and interruptions. If we compare serial communication to traffic, UART is like a station, and a frame of data is like a … Read more

RS-485 Design Guide

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RS-485 Design Guide

Abstract: This design guide discusses several important aspects of the RS-485 standard, aimed at helping engineers design data transmission circuits correctly. 1 Introduction In 1983, the Electronic Industries Association (EIA) approved a new balanced transmission standard known as RS-485. It has been widely praised and applied in industrial, medical, and consumer products, making RS-485 a … Read more

Everything You Need to Know About RS-485 Bus

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Everything You Need to Know About RS-485 Bus

Currently, common serial interfaces include UART, 232, 422, 485, CAN, etc., but for beginners, it is generally difficult to understand their differences and when to use them. In industrial applications, not all serial interfaces are the same. For instance, the RS-485 serial interface meets the requirements of high speed and industrial robustness, making it a … Read more