In the world of microcontrollers, registers play a crucial role. They are not only key components for data storage and processing but also the core of various operations performed by the microcontroller. Based on type, they can be divided into program memory, data memory, and special function registers. 1. Program Memory Program memory, as the … Read more
Power Supply: If the microcontroller is having issues, first check the power supply. There may be a problem with the power supply. Use a multimeter to check the power supply voltage of the microcontroller; it is best to use an oscilloscope to capture the voltage waveform because the voltage may be unstable (for example, voltage … Read more
Click the blue text to follow us 1. Simple Control Applications of Microcontrollers Automation, digitization, and intelligence are the trends in modern technological development, and all products and devices that require automation, digitization, and intelligence rely on microcontrollers. 1. Clock Timing (1) Clock Timing Setup Using the timer/counter of the 80C51 to achieve clock timing … Read more
The MCS-51, or 51 microcontroller, is a classic embedded system development platform known for its flexibility, reliability, and ease of use, making it a favorite among embedded engineers. This article will focus on the core features of the 51 microcontroller, development tools, and environments, hoping to assist engineers. 1. Core Features of the 51 Microcontroller … Read more
Microcontroller Instruction Execution Let’s consider a question: when we write an instruction into the microcontroller using a programmer, and then take the microcontroller out, it can execute that instruction. So this instruction must be stored somewhere in the microcontroller, and this place can retain the instruction even after the microcontroller loses power. What is this … Read more
Introduction Microcontrollers are quite “low-level” and “hardware” components, lacking complex data structures and intricate programming algorithms. We only need to understand and program from the perspective of how the microcontroller executes. For the average person, there is no need to delve deeply into the subject, as most of us are merely users of microcontrollers, not … Read more
Source: 21ic Electronics Network Original Author: Wang Xiaoqi MCU, DSP, and PLC are important concepts in the field of digital electronics technology, widely used in various fields. This article will provide a detailed comparison and analysis of their definitions, working principles, application areas, advantages, and disadvantages. Definition MCU (Microcontroller Unit) is an electronic product that … Read more
In the field of digital circuits, the reset function of microcontrollers is a crucial step to ensure their normal startup and operation. The reset function mainly resets the internal state of the microcontroller to its initial state, preventing issues such as chaos, runaway, or freezing during program execution, making the system ready to accept and … Read more
Can Microcontrollers Replace PLCs? Microcontrollers cannot completely replace PLCs. Although microcontrollers can achieve similar functions through programming, they are relatively less reliable and stable compared to PLCs. PLCs are widely used in industrial control and automation due to their excellent programmability, real-time performance, and stability. PLCs have several advantages over microcontrollers, which make them irreplaceable … Read more
In microcontroller technology, cycles are a very important concept. According to their types, cycles can be divided into clock cycles, machine cycles, instruction cycles, and bus cycles. Although they have different definitions and functions, they are interrelated during the operation of the microcontroller. Below we will discuss these cycles. 1. Clock Cycle The clock cycle … Read more