Description
1.47-Inch High Brightness SPI Display LCD Module (172×320)
This SPI Display module features a high vertical resolution of 172×3RGB×320, combined with advanced LCD technology to achieve a color saturation of 70% NTSC. It delivers highly detailed and realistic image and text display within a very compact physical size (active area: 17.65mm × 32.83mm).
The hardware integrates a powerful ST7778 driver IC (or a fully compatible equivalent), which perfectly supports a 4-line 8-bit serial SPI interface. This allows seamless compatibility not only with traditional 8051 and AVR architectures but also with modern mainstream microcontrollers such as Arduino, STM32, ESP32, and Raspberry Pi, significantly reducing the number of data bus pins required.
Additionally, the product features a high-rigidity PCB backplate, with excellent thickness control (PCB thickness: only 1.60mm, pin header height: 2.54mm), and includes four standardized mechanical mounting holes (2.00mm diameter, 3.50mm outer diameter for the large holes), greatly simplifying the enclosure assembly process for industrial-grade equipment.
Pin Description: How to Accurately Interpret the CN1 and CN2 Dual Row Pin Headers?
To facilitate flexible PCB prototyping and debugging with jumper wires, this SPI Display module brings out all functional pins to two standard 2.54mm pitch pin headers onboard: CN1 (single row, 8-pin) and CN2 (single row, 4-pin). The specific hardware pin electrical definitions and functions are assigned in the table below:
1.5 inch SPI Display Module Applications: Which Cutting-Edge Scenarios Best Utilize Its Hardware Advantages?
Thanks to its ultra-narrow, high-resolution bar-shaped form factor (172×320) and typical high brightness of up to 300 cd/m², this 1.47-inch SPI Display module is widely used in industrial and consumer electronics markets where space is limited but high color fidelity is required:
- Smart Wearables and Health Medical Devices: Smart bands, smart watches, handheld oximeters, portable glucose meters, etc. Its elongated appearance perfectly fits wrist contours and handheld enclosures.
- E-cigarettes and Micro Industrial Terminals: Displaying battery level, puff count, power levels, real-time wattage, or industrial site readings such as pipe pressure and instantaneous flow rate.
- PC Hardware Monitoring Sub-screen (Smart Water Cooling / Case Screen): With a height of 320 pixels, it is ideal for vertical installation inside PC cases or on water cooling blocks to monitor CPU temperature and GPU memory usage in real time.
- Desktop Trendy Gadgets and Micro Retro Game Consoles: Used as a small dynamic digital photo frame or mini pixel game display panel.
- Smart Home IoT Panels: Embedded inside 86mm wall switch boxes, on smart door locks, or in the center of knobs for rice cookers and microwaves, serving as a menu and animation guide.
Key Highlights: Why Does This SPI Display Stand Out Among Numerous Bar-Type Screens?
- Full Built-in Driver, Plug-and-Play: This SPI Display module is not just a bare LCD screen but integrates a complete PCB baseplate, mounting holes, and constant-current backlight driver circuit, saving developers from the hassle of designing external boost and constant-current circuits.
- Cost-Effective Industrial Temperature Tolerance: Operating temperature range from -20°C to +70°C, and storage temperature range from -30°C to +80°C, ensuring reliable operation not only indoors but also in semi-outdoor industrial environments with extreme cold or heat.
- Excellent Viewing Angle (Full Perspective Experience): The specification sheet clearly indicates wide viewing angles of U85/D85/R85/L85 (Typ.). This means the display shows no common TN screen issues such as color inversion or darkening/distortion when viewed from top, bottom, left, or right.
- Flicker-Free PWM Dimming: By applying a PWM signal to the BLEN pin, smooth stepless brightness adjustment from 0% to 100% is achieved, adapting to various ambient lighting conditions from complete darkness to bright outdoor light.
Technical FAQ:
Can the ST7778 driver be used interchangeably with common ST7789 libraries? How to configure the resolution?
The ST7778 controller is highly compatible with the well-known ST7789 at the SPI command set level. Key configuration note: Since common ST7789 drivers (such as Arduino’s TFT_eSPI or Adafruit_ST7789 library) are typically written for 240×240 or 240×320 resolutions, directly applying them may cause image shifts, white noise borders, or incomplete display. Code modification guide: When using general open-source libraries, be sure to force the screen resolution to 172 by 320 during initialization (Init Register). Additionally, because the physical pixels map from a specific start coordinate in the chip’s GRAM, you usually need to set the corresponding X-axis and Y-axis pixel offsets (Column/Row Address Offset) for different display orientations in the driver’s rotation configuration to achieve a perfect full-screen SPI Display.
