For MCU chips, whether configured as input or output, the ultimate object of operation is a voltage signal, not a current signal. This is something everyone should be clear about. If the external input is a current signal, it needs to be converted into a voltage signal through hardware circuitry. The MCU program collects and … Read more
1. Introduction 1.1 Document Background The Serial Peripheral Interface (SPI) is a full-duplex synchronous serial communication interface developed by Motorola, widely used for data transmission between microcontrollers and peripheral devices. This document takes the communication between MCU and FLASH memory as an example, elaborating on the hardware design, software implementation, and practical applications of SPI … Read more
The “Understanding at a Glance” series explains common terms and concepts of 8-bit MCUs in the most straightforward way. Unlike traditional explanations of the 8051, this series will combine products and practices from mainstream microcontroller manufacturers in the current market (such as Zhongx, Shengx, Xinx, Yingx, Jiux, etc.) to analyze core knowledge in a simple … Read more
The automotive chip shortage that erupted at the end of 2020 has been spreading throughout the automotive industry and continues to escalate, affecting most automotive manufacturers to varying degrees.MCUs are the hardest hit area of the “shortage”.According to analysis reports, although there are many types of automotive chips, the most in demand are MCUs.MCU (Microcontroller … Read more
Introduction: Although 3.3V is becoming increasingly popular in modern microcontrollers, and general system designs tend to adopt lower supply voltages, the 5V voltage level still holds significant importance and remains a popular design choice. This is mainly due to the higher voltage of 5V providing better anti-interference capabilities and stability in signal transmission, along with … Read more
The “independence” of the built-in watchdog in MCUs is typically reflected in its hardware isolation from core processing units (such as CPUs and buses), for example, having independent clock sources, counters, and reset logic. This ensures that even if the CPU becomes unresponsive due to software bugs or hardware failures, the built-in watchdog can still … Read more
Click the blue text above to follow us How the MCU Decodes Resolver Signals How does the MCU decode resolver signals Core Overview Parsing resolver signals is a collaborative process involving a “dedicated hardware chip (RDC) + general-purpose software algorithm (MCU).” The core division of labor is as follows: ⚡RDC: Responsible for the lowest level, … Read more
This article is approximately 4,500 words long, recommended for saving and reading. Author | Engineer Xiao Mo Produced by | Automotive Electronics and Software Table of Contents 1. Introduction 2. Basic Theory of SPI Protocol 3. Hardware Design Solutions 4. Software Architecture Design 5. Driver Implementation 6. Summary 1. Introduction 1.1 Document Background The Serial … Read more
Recently, I took a look at the Xiaomi air conditioner remote control at home and was curious about how Xiaomi would design the entire solution, so I decided to disassemble it. Upon disassembly, I found that there was no independent LCD segment display driver, no LDO, and no infrared transmission driver circuit. The core chip … Read more
GigaDevice: Breaking Through Domestic Substitution Driven by Storage + MCU Against the backdrop of cyclical fluctuations in the semiconductor industry and accelerated domestic substitution, GigaDevice’s performance in the first half of 2025 has attracted significant attention. As a leading enterprise in the domestic storage and MCU sectors, the company continues to break through based on … Read more