Introduction
This document outlines the specifications for the LS028I13-M-V1, a 2.83-inch transmissive a-Si TFT-LCD module from LESSON Smart Display. Featuring a QVGA resolution of 240x320 pixels, 262 thousand colors, and an IPS panel for wide viewing angles, this module is designed for applications requiring a clear and consistent display from various viewpoints. With its parallel MCU interface (8080-series), it offers a direct connection path for microcontrollers, making it suitable for industrial controls, portable devices, and embedded systems where a responsive and reliable display is needed.
Key Specifications
- Brand & Model: LESSON Smart Display LS028I13-M-V1
- Screen Size: 2.83 inches (diagonal)
- Active Area: 43.2 mm (H) × 57.6 mm (V)
- Driver IC: Not explicitly stated in the provided specification. The module features a full 8080-series parallel interface.
- Display Technology: Transmissive type a-Si TFT-LCD
- Display Mode: Transmissive, IPS (Main LCD: Transmissive, IPS)
- Module Type: COG + FPC + B/L
- Display Resolution: 240(RGB) × 320 pixels (QVGA)
- Display Colors: 262 Thousand Colors
- Module Outline Dimensions: 46.2 mm (H) × 65.0 mm (V) × [Thickness from spec] (D)
- Interface: 8080-series MCU Parallel Interface, 9/8-bit bus (Pins: 8-bit data bus D0-D7, control signals CS, RS, WR, RD, RESET). Also includes a TE (Tearing Effect) output.
- Viewing Angle: 85 degrees (Typical, all directions: Top, Bottom, Left, Right, at CR>10)
- Luminance: 300 cd/m² (Typical, at IF=80mA)
- Contrast Ratio: 1500:1 (Typical), 1000:1 (Min)
- Response Time (Tr+Tf): 35 ms (Max)
- Supply Voltages: VCC (2.4-3.3V, Typ. 2.8V), IOVCC (1.65-3.3V, Typ. 1.8V)
- Operating Temperature: -20°C to +70°C
- Storage Temperature: -30°C to +80°C
- Backlight: 4-chip white LED in parallel (Drive condition: IF=80mA, Vf=3V Typ.)
General Description
The LS028I13-M-V1 is a quality display module built around a wide-viewing-angle IPS (In-Plane Switching) panel, providing a consistent 85-degree viewing cone from all sides. Its 2.83-inch QVGA display offers a slightly larger active area than typical 2.8-inch modules. The module is designed for direct connection to microcontrollers via a classic 8080-series parallel interface. This interface includes an 8-bit bi-directional data bus (D0-D7) and standard control pins (Chip Select CS, Register Select RS, Write WR, Read RD, and Reset), allowing for high-speed data transfer and direct memory access.
The specification provides extensive timing characteristics for this parallel interface, detailing parameters like address setup/hold time, chip select pulse width, and write/read cycle times for both ID reading and frame memory access. The module includes a TE (Tearing Effect) output signal to synchronize the host MCU's frame buffer writes with the LCD's refresh, preventing visual tearing. The electro-optical characteristics are strong, with a high typical contrast ratio of 1500:1 and good luminance. The mechanical notes provide important design guidelines, such as keeping the housing opening 0.3mm smaller per side than the active area and ensuring the foam gasket opening is 0.6mm larger per side.
Application Scenarios
This parallel-interface IPS module is ideal for applications benefiting from direct MCU connection and wide viewing angles:
- Industrial Control Panels: HMIs for factory automation, process monitoring, and instrumentation.
- Portable Medical Devices: Patient monitors, diagnostic equipment, and handheld scanners.
- Test and Measurement Equipment: Interfaces for oscilloscopes, meters, and calibrators.
- Consumer Appliances: Displays for high-end coffee machines, kitchen appliances, or audio equipment.
- Embedded Systems: General-purpose displays for development boards, IoT gateways, and control units.
Conclusion
The LESSON Smart Display LS028I13-M-V1 is a robust and versatile display solution. Its combination of an IPS panel for wide viewing angles, a standard 8080 parallel interface for high-speed communication, and comprehensive timing specifications makes it a reliable and performant choice for embedded system designers. It is particularly well-suited for industrial and professional applications where display consistency from different angles and responsive control are important.
