Neuro and Evil fun time pid:126363594 by:Wimo Yes, that’s right, I2C has also been discussed in the Microelectronic System Click here to view the Microelectronic System review: I2C Background Knowledge Parallel Transmission and Serial Transmission Parallel Transmission Transmits multiple bits at once, usually using multiple data lines simultaneously. Serial Transmission Transmits one bit at a … Read more
Microcontroller Serial Port Communication Technology The serial interface and communication of microcontrollers are core technologies for data transmission between devices in embedded systems. 1. Basics of Serial Communication 1.Serial vs Parallel Communication Serial communication: Transmits data bit by bit, using fewer pins (14), suitable for long distances and low power consumption scenarios. Parallel communication: Multiple … Read more
The I2C waveform is one of the most common, and today we will directly discuss the diagram.Start Signal:Figure 1Acknowledge Signal:Figure 2Stop Signal:Figure 3Figure 4Acknowledgment:SACK: acknowledged by slave; the slave device acknowledges the signal, low level indicates received;MACK: acknowledged by master; the master device acknowledges the signal, low level indicates received;NACK: Not acknowledged; the device is … Read more
Why do we need pull-up resistors in I2C? Because it uses open-drain output. Why is it open-drain output? The I2C protocol supports multiple master devices and multiple slave devices on a single bus. If push-pull output is used instead of open-drain output, it could lead to short circuits between master devices. Therefore, the bus generally … Read more
With the rapid development of electronic technology, microcontrollers have become one of the essential basic components in many fields. They are small yet complete microcomputer systems that integrate a central processing unit (CPU), RAM, ROM, various I/O ports, and interrupt systems onto a single silicon chip using ultra-large-scale integration technology, and are widely used. 1. … Read more
1. Detailed Explanation of I2C Communication Principles 1. Hardware Structure and Physical Layer Bus Topology: The I2C bus is a multi-master/slave structure that supports multiple master and slave devices sharing the bus. SCL (Clock Line) and SDA (Data Line) are both open-drain outputs and require external pull-up resistors (typical value: 4.7kΩ, specific values should be … Read more
Table of Contents Introduction: Interface Protocols – The “Digital Language” of Embedded Systems 1. Low-Speed Communication Interfaces: Efficient Solutions for Simple Scenarios 2. High-Speed Communication Interfaces: The Backbone of Large Data Transmission 3. Specialized Domain Interfaces: “Specialists” for Specific Scenarios 4. Practical Applications and Selection Guide for Interface Protocols 5. Interactive Poll: Which Embedded Interface … Read more
Recently, ACROVIEW, a leader in the chip programming field, launched a significant version update of its programming software. Coinciding with the release of the new version, the company announced the addition of several compatible chip models, including the RTQ6752GQWT programmable power management chip developed by RICHTEK. This chip has successfully completed technical adaptation with ACROVIEW’s … Read more
1. Comparison of Communication Speeds: SPI, I2C, UART SPI > I2C > UART 1. Synchronous communication > Asynchronous communication; 2. In synchronous communication, a clock line must connect both ends of the transmission; 3. All are serial communication methods, while parallel communication is used for internal storage communication, such as flash; 4. The suitable transmission … Read more
The previous article organized common communication interfaces I (RS232/RS485/USB/TYPE-C principles and differences), and in this article, we continue to organize the principles and differences of CAN, I2C, SPI, UART, and GPIO. 1.CAN Bus Interface 1)Definition CAN stands for Controller Area Network, developed by the German company BOSCH, known for its research and production of automotive … Read more