Description
Core Parameters and Product Introduction of 2.8 inch screen TFT LCD Module
This 2.8 inch screen LCD module is a transmissive normally white TFT display panel, supporting 262K full-color display. The display area is precisely controlled at 43.20(H)×57.60(V)mm, with an overall dimension of 50.00(H)×69.20(V)×2.30(D)mm and a thickness of only 2.30±0.2mm. Its ultra-thin and lightweight design can be easily embedded into various compact devices. The module is equipped with an 8080 MCU 16-bit parallel interface by default, which is also compatible with 8-bit mode, ensuring efficient data transmission and perfect adaptation to mainstream single-chip microcomputers and embedded controllers without complex hardware modifications for quick integration.
In terms of driving, this 2.8 inch screen module adopts the industry-proven ST7789 driver chip, which is renowned for its low power consumption, high refresh rate and stable color performance. Under fixed current testing, the brightness reaches 250cd/m², with uniform and soft light that balances display clarity and visual comfort. It also supports independent backlight control, allowing brightness adjustment according to actual application scenarios to further optimize power consumption.
In terms of environmental adaptability, this 2.8 inch screen module demonstrates excellent industrial-grade performance, with an operating temperature range of -20~+70℃ and a storage temperature of -30~+80℃. It can adapt to various complex temperature scenarios such as industrial sites, outdoor equipment and vehicle-mounted environments, solving the problem of display abnormalities and performance degradation of ordinary LCD modules in high and low temperature environments.
The module also provides a flexible touch screen selection scheme, supporting three options: no touch screen, resistive touch screen(TFT-H028A17QVTST2R37)and capacitive touch screen, meeting the touch interaction needs of different products and adapting to various application scenarios from pure display to touch operation.
Core Highlights of 2.8 inch screen TFT LCD Module
- High-Adaptability Hardware Design, Low Integration Cost
The module adopts an 8080 MCU 16-bit interface by default and is compatible with 8-bit mode. This interface is the mainstream in the industrial control field, perfectly adapting to mainstream controllers such as 51 single-chip microcomputers, STM32 and ESP32. Engineers can quickly complete driver transplantation, greatly shortening the product development cycle. At the same time, the module provides touch screen selection, independent backlight control, reserved touch pins and other designs, balancing the versatility and customization needs of the product. Whether it is an industrial instrument with pure display or an intelligent terminal with touch, it can be quickly developed based on this module without redesigning the hardware circuit of the display module.
- Ultra-Thin & Precise Size, Suitable for Compact Devices
The 2.8 inch screen display size is a golden size among small-size LCDs, which not only ensures the richness of display content but also does not occupy too much equipment space. The module’s thickness of 2.30±0.2mm and overall dimension of 50×69.2mm further enhance the compactness advantage. At the same time, the ratio of the display area to the overall dimension is precisely designed, with no redundant black edges on the screen, improving the overall appearance quality of the equipment.
- Low Power Consumption & High Display Effect, Balancing Performance and Battery Life
The equipped ST7789 driver chip itself has low power consumption characteristics. Combined with the low-voltage driving configuration of 1.8V/2.8V/3.3V, compared with traditional high-voltage driven LCD modules, the power consumption is greatly reduced, making it especially suitable for battery-powered portable devices. The 4-channel parallel LED design of the backlight system ensures a brightness of 250cd/m² while enabling single-channel independent control. Users can adjust the backlight brightness according to ambient light to further reduce power consumption and improve equipment battery life.
Wide Application Scenarios of 2.8 inch screen TFT LCD Module
- Industrial Control Field
It is suitable for the high and low temperature environment of industrial workshops. The 8080 MCU interface is compatible with industrial controllers, and the 2.8 inch screen can clearly display equipment data, parameters and alarm information, meeting the demand for industrial-grade stable display.
- Portable Medical Instruments
It is suitable for portable medical devices such as handheld blood pressure monitors and blood glucose meters. The ultra-thin and lightweight design reduces the size of the device, low power consumption improves battery life, and full-color display clearly presents detection data, optimizing the user experience.
- Smart Home Field
It is used for smart switches, temperature and humidity monitoring terminals, etc. Low power consumption is suitable for long-term standby, the 8080 MCU interface is easy to integrate, and the 2.8 inch screen clearly displays equipment status and environmental parameters.
- IoT Terminals
It is suitable for outdoor IoT monitoring and data acquisition equipment. The wide temperature and low power consumption are suitable for outdoor environments, and the 2.8 inch screen intuitively presents collected data and equipment status.
Technical Q&A of 2.8 inch screen TFT LCD Module
Q1: The driver chip of this 2.8 inch screen module is ST7789. Can the mainstream ST7789 driver code on the market be directly transplanted and used?
A: It can be directly transplanted and used after minor modifications. The module adopts a standard 8080 MCU parallel interface, which is consistent with the hardware interface logic of mainstream ST7789 driver codes on the market. At present, there are mature ST7789 8080 interface driver cases for controllers such as 51 single-chip microcomputers, STM32 and ESP32. Engineers only need to modify the pin mapping relationship in the code according to the pin definition of the module to quickly realize the driver.
Q2: This 2.8 inch screen module supports 8-bit and 16-bit 8080 MCU interfaces. How to choose between the two modes?
A: The choice between the two modes is mainly based on the main control resources and data transmission needs of the device. The 16-bit mode is the default mode of the module, with higher data transmission efficiency and faster display refresh speed, suitable for scenarios requiring display fluency; the 8-bit mode is compatible with low-end controllers with limited resources, such as some 51 single-chip microcomputers, and can meet simple display needs such as pure text and static icons.
The two modes can be switched through software configuration without modifying the hardware.
Q3: After selecting the capacitive touch screen for this 2.8 inch screen module, the driving voltage is 3.3V. Is there any conflict with the driving voltage of the module itself?
A: There is no conflict at all, and unified power supply can be realized. Users can use 3.3V to supply power to both the module VCI and the touch screen, without designing a separate power supply module, simplifying the hardware circuit design.
