51 Microcontroller

Microcontroller: Can the Interrupt System Control an Entire Production Line? This Case Study Amazed Me!

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Microcontroller: Can the Interrupt System Control an Entire Production Line? This Case Study Amazed Me!

Today, let’s discuss a seemingly simple yet powerful technology that can solve complex problems—the microcontroller interrupt system.In automated production lines, it is often necessary to respond in real-time to multiple sensor signals. How can a small microcontroller accomplish this task? The interrupt system acts as the invisible “master scheduler”. What is an Interrupt System? Imagine … Read more

Serial Peripheral Interface (SPI) Protocol: Principles, Architecture, and Applications

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Serial Peripheral Interface (SPI) Protocol: Principles, Architecture, and Applications

Author | Hu Tu Zhen Produced by | Automotive Electronics and Software #01Introduction to the Serial Peripheral Interface (SPI) Protocol SPI is a multi-master or master-slave, four-wire, full-duplex synchronous serial communication protocol, which means that data can be sent and received simultaneously.SPI was developed by Motorola as a protocol for synchronous serial communication, allowing full-duplex … Read more

Microcontroller: Essential for Smart Home! 7 Key Steps to Drive OLED Display Using I2C Protocol

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Microcontroller: Essential for Smart Home! 7 Key Steps to Drive OLED Display Using I2C Protocol

Hello everyone, I am Xiao Chen! Today, let’s talk about a particularly useful skill in smart home projects—how to drive an OLED display using a microcontroller via the I2C protocol.Whether it’s a homemade temperature and humidity monitor, a smart door lock, or a household gas detector, a clear display interface can greatly enhance user experience. … Read more

Digital-to-Analog and Analog-to-Digital Conversion in Microcontrollers

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Digital-to-Analog and Analog-to-Digital Conversion in Microcontrollers

The digital-to-analog (DAC) and analog-to-digital (ADC) conversion in microcontrollers is a key technology that connects digital systems with the analog world. 1. Basic Concepts 1. DAC (Digital-to-Analog Converter) Function: Converts digital signals into analog signals (such as voltage or current). Application Scenarios: Driving motors, audio output, LED dimming, etc. Implementation Methods: Weighted resistor networks, R-2R … Read more

Exploring Popular Development Boards | 51 Microcontroller Development Boards

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Exploring Popular Development Boards | 51 Microcontroller Development Boards

Common brands of 51 microcontroller development boards include STC (Holtek Technology), Puzhong Technology, Jinsantan Electronics, ZD Atom, Wildfire Electronics, Anfu Lai Electronics, and Tianxiang Electronics. 01 STC (Holtek Technology) Development Board Holtek Semiconductor Inc. is a high-tech enterprise focused on integrated circuit design, software development, and system solution design. Its core business includes chip design, … Read more

Microcontroller Parallel I/O Port Applications and C51 Programming Guide

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Microcontroller Parallel I/O Port Applications and C51 Programming Guide

1. Basics of Microcontroller Parallel I/O Ports 1. Port Structure: P0 Port: Open-drain structure, requires external pull-up resistor; can be used as data/address bus or general I/O. P1-P3 Ports: Quasi-bidirectional I/O with internal pull-up resistors, default state is high level. Driving Capability: P0 port has strong current absorption capability, high level output requires external pull-up; … Read more

Introduction to Common Components in Proteus: Symbols and Names

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Introduction to Common Components in Proteus: Symbols and Names

If you don’t want to miss my updates, go to the top right corner – view public account – set as a star AT89C51 (Classic Microcontroller) STM32F103 SWITCH (Single Switch) SW-SPST (Single Pole Single Throw Switch) SW-SPDT (Single Pole Double Throw Switch) SW-ROT-3 (Single Pole Triple Throw Switch) CAP (Non-polarized Capacitor) CAP-ELEC (Polarized Capacitor) CRYSTAL … Read more

Understanding the SPI Protocol: Principles, Architecture, and Applications

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Understanding the SPI Protocol: Principles, Architecture, and Applications

1 Serial Peripheral Interface (SPI) Protocol Overview SPI is a multi-master or master-slave, four-wire, full-duplex synchronous serial communication protocol, which means that data can be sent and received simultaneously.SPI was developed by Motorola as a protocol for synchronous serial communication, allowing full-duplex communication between two or more devices, which can be designated as master or … Read more

Microcontroller and ADC Conversion Interface

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Microcontroller and ADC Conversion Interface

1. Introduction to A/D Converters An A/D converter (ADC) converts analog signals into digital signals, allowing microcontrollers to process data. With the rapid development of large-scale integrated circuit technology, a variety of A/D conversion chips with different structures and performances have emerged. 1. Overview of A/D Converters Currently, there are many single-chip ADCs available, and … Read more

44 Examples of Proteus Assembly Language Simulation: A Comprehensive Collection Based on 51 Microcontroller Assembly Language Design

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44 Examples of Proteus Assembly Language Simulation: A Comprehensive Collection Based on 51 Microcontroller Assembly Language Design

Previous Review Note: The A series includes assembly materials including simulation and source code The T series only includes simulation and programs (C language) The H series includes both programs (C language) and simulations, as well as design reports and video explanations! 1. Previous collections can be viewed by searching “directory” 2. For simulation software, … Read more