According to the working principle and output characteristics of high-precision photoelectric position sensitive detector (PSD), this paper introduces a design scheme of PSD output signal digital acquisition circuit based on single chip microcomputer technology. The digital conversion and acquisition of PSD output analog signal are realized by ATmega16 single chip microcomputer controlling AD1674 A / […]
Category: Control /MCU
Introduction to the usage of 8051 single chip microcomputer instruction system
The instruction system of a computer is a collection of all the instructions it can execute. The instruction system of 8051 has 111 instructions, which is composed of 42 mnemonics and 7 addressing modes. The instructions of 8051 usually include opcode and operand. The operation code specifies what operation the instruction performs, which is expressed […]
Analysis on the causes of single chip microcomputer system failure and the measures to improve system reliability
At present, a large number of embedded systems use single chip microcomputer, and such applications are being further expanded; But for many years, people have been confused about the reliability of single chip microcomputer system. In some control systems that require high reliability, this often becomes the main reason to limit their application. Failure analysis […]
How to make STM32 MCU realize automatic ISP download
STM32 supports emulator and serial port download program. The content to be introduced belongs to serial port download, that is, ISP download. Manual ISP download program, we already know, control boot0 pin implementation. When STM32 is powered on, it will automatically detect the level of boot0 pin. If it is high, wait for the user […]
Design of data acquisition system based on gns97c2051 single chip microcomputer
A / D conversion is often used in microcomputer measurement and control system. The common method is to expand one or more a / D acquisition cards. When there are few analog signals or slow changing signals such as temperature and pressure, using bus a / D card is not the most appropriate and economical […]
Working principle analysis of PWM in single chip microcomputer
PWM is widely used in single chip microcomputer. Its basic principle is very simple, but it often applies to different occasions, and the meaning is not exactly the same. Here, I will first introduce the basic concepts and basic principles to you, and at least know what it is when it is used later. PWM […]
Analysis of three startup modes of STM32 single chip microcomputer
The storage media corresponding to the three startup modes of STM32 are built-in, they are: 1) User flash = flash built into the chip. 2) SRAM = RAM area built in the chip, which is memory. 3) System memory = a specific area inside the chip. When the chip leaves the factory, a bootloader is […]
Design of intelligent anti-theft protection system based on AVR single chip microcomputer
introduction The collections in the museum are often threatened by man-made theft, and the changes of the surrounding environment will also damage them. Therefore, an extremely reliable anti-theft system and perfect air conditioning system are needed. The purpose of this design is to realize the intelligent anti-theft and protection of the museum’s collections. When the […]
Comparative analysis of software and hardware between SCM and arm
1. Software 1) Convenient. It is mainly reflected in the later development, that is, the application program is directly developed on the operating system. Unlike MCU, everything has to be rewritten. The early stage of the operating system transplantation work, or to professionals to do. 2) Safety. This is a feature of Linux. The kernel […]
Analysis of internal structure and program execution process of 51 single chip microcomputer
Note: 1. ROM: read only memory, the read-only memory area of single-chip microcomputer is mostly used to store programs, also known as program memory. 51 MCU is EPROM, so-called EPROM is erasable read-only memory. You can erase the original program and write a new one. It can be saved after power failure, but data memory […]