LESSON Smart Display LS028I31-M-V1 (Driver IC: ST7789P3) – 2.83" IPS 8080 Module

Tags & Keywords
#TFT-LCD #IPS #8080 #2.83inch #240x320 #262KColors #COG #Transmissive #EmbeddedDisplay #IndustrialHMI #MCUInterface #WideViewingAngle #RoHS #Backlight #LESSON #SmartDisplay

Introduction
This document is the official product specification for the LS028I31-M-V1, a 2.83-inch transmissive a-Si TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring QVGA resolution (240x320), 262K colors, and an IPS panel for wide viewing angles, this module is designed for applications requiring a reliable parallel interface. With its 8080-series MCU parallel interface and comprehensive specifications covering mechanical, electrical, and optical characteristics, it serves as a robust solution for industrial controls, medical devices, and various embedded systems where data transfer speed is prioritized.

Key Specifications

• Brand & Model: LESSON Smart Display LS028I31-M-V1
• Screen Size: 2.83 inches (diagonal)
• Active Area: 43.2 mm (H) × 57.6 mm (V)
• Driver IC: ST7789P3 (as indicated in the Physical Features section)
• Display Technology: Transmissive type a-Si TFT-LCD
• Display Mode: Active matrix TFT, Transmissive, IPS (In-Plane Switching)
• Module Type: COG + FPC + B/L
• Display Resolution: 240(RGB) × 320 pixels (QVGA)
• Display Colors: Up to 262K Colors
• Module Outline Dimensions: 50.0 mm (H) × 69.1 mm (V) × 2.3 mm (D)
• Interface: 8080-series MCU Parallel Interface (8-bit data bus: D0-D7, control pins: CS, RS, WR, RD)
• Input Data: 8bit 8080
• Viewing Direction: Free (IPS)
• Supply Voltages:
  • VCC (Main Power): 2.4V ~ 3.3V (Typical: 2.8V)
  • IOVCC (I/O Power): 1.65V ~ 3.3V (Typical: 1.8V)
• Absolute Maximum Ratings:
  • VCC / IOVCC: -0.3V to +4.6V / +4.0V
  • Operating Temperature (T_OPR): -20°C to +70°C
  • Storage Temperature (T_STR): -30°C to +80°C
• Backlight: 4-chip white LED in parallel
• Environmental Compliance: RoHS Compliant

General Description
The LS028I31-M-V1 is a versatile display module built around a wide-viewing-angle IPS panel. Its 2.83-inch size with QVGA resolution is a standard format for many embedded applications. The module is controlled by the ST7789P3 driver IC, which is accessed via an 8-bit 8080 parallel interface. This interface provides faster data transfer compared to SPI, suitable for applications with dynamic graphics or higher refresh requirements.

The specification includes a detailed pin description for the 24-pin FPC, covering data bus, control signals, power, and backlight pins. It provides comprehensive 8080 parallel interface timing characteristics for both write and read operations (including reading ID and frame memory), with parameters like address setup/hold time, chip select pulse width, and read/write cycle times. The electro-optical characteristics table defines key performance metrics like contrast ratio (Typ. 1500:1), response time (Max. 35ms), transmittance, white point chromaticity, and viewing angle (Typ. 85° all sides).

Pin Description (Key Pins)

Application Scenarios

• Industrial HMIs: Control panels for factory automation, process monitoring.
• Medical Devices: Patient monitor interfaces, diagnostic equipment displays.
• Test & Measurement: Portable instrument displays, data loggers.
• Consumer Electronics: Smart appliance interfaces, portable multimedia.
• Automotive Aftermarket: In-car display systems, diagnostic tools.

Conclusion
The LESSON Smart Display LS028I31-M-V1 is a well-specified and reliable display solution that combines IPS visual quality with a fast 8080 parallel interface. Its detailed timing specifications and clear pinout make it straightforward to integrate into systems requiring efficient graphical data transfer, serving as a dependable component for a wide range of professional and embedded applications.