Tags & Keywords
#TFT-LCD #TN #MultiInterface #2.8inch #240x320 #262KColors #8080 #SPI #RGB #COG #EmbeddedDisplay #IndustrialHMI #FlexibleInterface #RoHS #LESSON #SmartDisplay

Introduction
This document is the official product specification for the LS028T29-M-V1, a 2.8-inch transmissive a-Si TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring QVGA resolution (240x320), 262K colors, and a TN panel, this module stands out for its exceptional interface flexibility. Controlled by the ILI9341V driver, it supports multiple interface modes including 8080/6800 parallel, SPI, and RGB, making it a highly adaptable solution for a vast range of embedded systems, from industrial HMIs and medical devices to consumer electronics and prototyping.

Key Specifications

• Brand & Model: LESSON Smart Display LS028T29-M-V1
• Screen Size: 2.8 inches (diagonal)
• Active Area: 43.2 mm (H) × 57.6 mm (V)
• Driver IC: ILI9341V (as indicated in the Physical Features section)
• Display Technology: Transmissive type a-Si TFT-LCD
• Display Mode: Active matrix TFT, Transmissive, TN (Twisted Nematic)
• Module Type: COG + FPC + B/L
• Display Resolution: 240(RGB) × 320 pixels (QVGA)
• Display Colors: Up to 262K Colors
• Module Outline Dimensions: 50.4 mm (H) × 69.6 mm (V) × 2.38 mm (D)
• Interface: Multi-Interface (Selectable):
  • MCU Parallel (8080/6800, 8/9/16/18-bit)
  • SPI (3-wire/4-wire)
  • RGB Interface (6/16/18-bit)
• Input Data: 8bit 8080 (Base configuration)
• Viewing Direction: TN (6 O'clock typical)
• Supply Voltages:
  • VCC (Main Power): 2.5V ~ 3.3V (Typical: 2.8V)
• Absolute Maximum Ratings:
  • VCC: -0.3V to +4.6V
  • Operating Temperature (T_OPR): -20°C to +70°C
  • Storage Temperature (T_STR): -30°C to +80°C
• Backlight: Integrated white LED backlight
• Environmental Compliance: RoHS Compliant

General Description
The LS028T29-M-V1 is a highly flexible display module built around the powerful ILI9341V controller. Its primary strength is the selectable interface mode, configured via IM[3:0] pins. This allows designers to choose the optimal interface for their application:

• 8080/6800 Parallel: For high-speed data transfer with microcontrollers.
• SPI: For minimal pin count.
• RGB Interface: For direct connection to MPUs/GPUs with a dedicated display controller.

The specification provides exhaustive timing characteristics for all modes: detailed tables for parallel MCU interface, SPI interface (3-line system), and RGB interface (6/16/18-bit). It also includes a comprehensive reset timing section. The pin description table is complex, reflecting the multi-function nature of many pins depending on the selected interface mode.

Interface Mode Selection (Example via IM pins)

Application Scenarios

• Industrial HMIs: Can use fast parallel or RGB interface for complex GUIs.
• Consumer Electronics: Flexible for different mainboard designs (MPU or MCU).
• Prototyping & Development: Ideal for evaluation boards due to interface flexibility.
• Medical & Test Equipment: Can match the interface of the host processor.
• Educational Kits: Teaches different display interface protocols.

Conclusion
The LESSON Smart Display LS028T29-M-V1 is a uniquely versatile display solution. Its support for multiple industry-standard interfaces via the ILI9341V controller makes it a "one-module-fits-many" component, greatly simplifying sourcing and design for diverse projects. The comprehensive timing specs for each mode provide developers with all necessary information for reliable integration, making it an excellent choice for applications requiring interface flexibility or future-proofing.