The difference between a serial port screen and a parallel port screen, the difference between a serial port LCD screen and a parallel port LCD screen

by:Kimeery     2021-08-24
I believe that many people will often hear the words serial port screen and parallel port screen when they are doing MCU development. Those who are new to it must be relatively unfamiliar. What is the difference between serial port screen and parallel port screen. As a manufacturer focusing on Ru0026D, production and sales of LCD LCD screens, LCM LCD modules, LED backlights and LED digital tubes, Kimeery will briefly explain the difference between serial LCD screens and parallel LCD screens from the following aspects. Hope It's helpful to everyone. Kimeery: serial port LCD screen 1. Display color: the performance of the upper single-chip microcomputer determines the choice of parallel port LCD screen. 8-bit single-chip microcomputer is suitable for 256-color display, and only 16 and 32-bit single-chip microcomputers can achieve 65K colors. The color displayed on the serial port LCD screen has nothing to do with the host microcontroller, generally 65K colors. 2. Writing speed: LCD display is composed of each pixel. The structure above the serial port and parallel port LCD screen determines the operating speed of these pixels. The writing speed of the parallel port LCD screen is determined by the speed of the upper single-chip microcomputer. The faster the upper single-chip speed, the shorter the writing time. The serial port has nothing to do with the upper single-chip speed, mainly related to the baud rate of the serial port. 3. System structure: The serial port LCD screen mainly includes serial port communicator, Flash controller, LCD screencontroller, SDRAM controller, bus controller, etc. Accept the instructions from the host computer through the serial port, and execute the corresponding display operation after translation. Pictures and fonts are stored in Flash in advance and can be called directly. The parallel port LCD screen is mainly composed of LCD screencontroller, SDRAM controller, parallel port controller, etc., under the control of the clock, it temporarily stores and displays the agreed data sent by the parallel port, that is, I will display what information is sent. 4. Application scenario: The serial port LCD screen is suitable for products with bright and colorful interface, complex display of many texts, and low performance of the host computer. The parallel port LCD screen is suitable for products with simple interface, real-time data acquisition and display, and high-speed drawing. 5. Cost price: Through the above analysis, the price of parallel-port LCD is cheaper than that of serial-port LCD. What is the difference between a serial port screen and a parallel port screen? I believe that through the introduction of the above five aspects, everyone should be very clear.
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