TFT LCD Display LCD Interface Type Comparison
At present, there are several mainstream interface methods of TFT LCD display: MCU interface, RGB interface, SPI interface, MIPI interface, QSPI interface, LVDS interface.
There are more applications are MCU interface and RGB interface and SPI interface, mainly the following differences:
MCU interface: will decode commands, timing generator to generate timing signals, drive COM and SEG drive.
RGB interface: When writing LCD register settings, there is no difference with the MCU interface. The difference is only in how the image is written.
SPI interface: SPI (Serial Peripheral Interfacce), serial peripheral interface, is a synchronous serial data transmission standard proposed by MOTOROLA.
The SPI interface is often referred to as a 4-wire serial bus, or it can also be a 3-wire SPI interface, which works in a master/slave mode, and the data transfer process is initialized by the master.
SPI CLK, SCLK: Serial clock, used for synchronous data transfer, output by the host
CS: Chip select line, active low, output by the host
MOSI: master output, slave input data line
MISO: Master input, slave output data line
There is no so-called best or worst between interfaces, only suitable and unsuitable applications for the product; Therefore, we organize the data to provide the following table, for the various interfaces introduced in this article, to provide a multi-faceted advantages and disadvantages analysis, so that you can analyze and compare to find out the most suitable display interface for your products.
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