Abstract: This design guide discusses several important aspects of the RS-485 standard, aimed at helping engineers design data transmission circuits correctly. 1 Introduction In 1983, the Electronic Industries Association (EIA) approved a new balanced transmission standard known as RS-485. It has been widely praised and applied in industrial, medical, and consumer products, making RS-485 a … Read more
As a fashionable tech enthusiast, there are a few products that enhance personal style in life:Bluetooth headsets, Bluetooth mice, Bluetooth speakers, smart wristbands… Just buying one, even if you haven’t started using it, will make you feel like your life has instantly elevated in quality, and the tech factor skyrockets. Copyright images from the gallery, … Read more
Does IIC support hot swapping? (With a detailed interpretation of CW32 IIC protocol) Have you learned it yet? After I finish these low-speed experiments, I will provide the debugging steps for the logic analyzer. IIC is done, next comes SPI, which is worth highlighting because the vast majority of devices use SPI; it’s practically ALL … Read more
01 【SPI Concept】 SPI (Serial Peripheral Interface) is a synchronous serial port for communication between microcontroller units (MCUs) and peripheral ICs (such as sensors, ADCs, DACs, driver chips, and external storage devices). The communication rate can range from a few thousand bps to hundreds of Mbps or even higher, depending on the specifications and performance … Read more
01 【Introduction】 SPI: Serial Peripheral Interface, is a synchronous serial interface for device communication. SPI was developed by Motorola around 1985 and is suitable for short-distance, device-to-device communication. Since then, this interface has become a de facto standard adopted by many semiconductor manufacturers, especially microcontrollers (MCUs) and microprocessors (MPUs). 02 【SPI Interface】 The SPI bus … Read more
Recently, I needed to write a protocol, so I reviewed SPI again. (I have kept this draft for too long, if I don’t publish it now, I will forget it) First, I analyzed the characteristics of the SPI protocol, using the ADS1118 device as a carrier for analysis. Later, I used a logic analyzer to … Read more
1. Introduction UART, full name Universal Asynchronous Receiver/Transmitter, translated as Universal Asynchronous Transceiver. The emergence of serial ports was around 1980, with data transmission rates of 115kbps～ 230kbps. Initially, serial ports were used to connect computer peripherals, typically connecting mice, external Modems, and old cameras and graphics tablets. Serial ports can also be used for … Read more
Click the blue text Follow us 1. Introduction 1. Concept The SPI (Serial Peripheral Interface) bus protocol is a full-duplex synchronous serial bus communication protocol used for data transmission between integrated circuits. The SPI bus typically consists of one master device and multiple slave devices, each slave device has a separate chip select signal, and … Read more
Click the Blue Text Follow Us 1. Introduction 1. Concept The IIC protocol (I²C, or Inter-Integrated Circuit) is a widely used low-speed serial half-duplex communication protocol for communication between integrated circuits, allowing only unidirectional communication at any one time. It was invented by Philips in the 1980s and is widely used for data transmission between … Read more
Today, I will share a document from TI titled “RS-485 Design Guide”. Reply “485 Design Guide” in the public account backend to obtain the complete PDF. 1 Introduction In 1983, the Electronic Industries Association (EIA) approved a new balanced transmission standard known as RS-485. It has been found that RS-485 is highly praised and is … Read more