LSC028I14-M-V1: 2.83-Inch TFT LCD Module, 240×320 Resolution, 8080 MCU Interface, Integrated Capacitive Touch Panel
Product Subtitle / Keywords
2.83 Inch Display, 240(RGB)×320 Resolution, a-Si TFT-LCD Module, Transmissive, Normally Black, 262K Display Colors, 8080 MCU 8/16-bit Parallel Interface, Integrated Capacitive Touch Panel (CTP), Operating Temperature -20°C to +70°C, Storage Temperature -30°C to +80°C, Module Luminance 300 cd/m² (Typ.), RoHS Compliant, Spec Rev 1.0, Lesson Smart Display Technology Co., Ltd.
1. Executive Summary & Product Positioning
The LSC028I14-M-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module. It is composed of a TFT-LCD panel, a driver circuit and a backlight unit. The panel is of the COG+FPC+B/L+CTP type, meaning it includes an integrated Capacitive Touch Panel (CTP). The panel size is 2.83 inch and the resolution is 240(RGB)*320, the panel can display up to 262k colors.
This product specification (Revision 1.0, released on 2025-07-28) serves as the definitive technical document, providing detailed information on the module's general description, physical features, mechanical specifications, outline dimensions (LCM and LCM+CTP), absolute maximum ratings, electrical characteristics, module function description (including pin definition, block diagram, and interface timing), and electro-optical characteristics.
The document provides the core parameters necessary for system integration into standard 2.83-inch portrait display applications with touch functionality. The unequivocal recommendation for engineers is to strictly adhere to the mechanical and electrical specifications described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
- Display Resolution: Portrait format: 240(RGB) × 320 pixel array.
- Display Colors: Up to 262K colors.
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight) + CTP (Capacitive Touch Panel).
- Interface Type: The module uses an 8080 MCU 8/16-bit parallel interface, as indicated by the signal names in the pin definition (DB0~DB15, RD, WR, RS, CS, RESE).
- Power Architecture: Requires multiple power supplies as indicated by the pin definition: VDD (3.3V) for the LCD driver IC, V33 for I/O, and CTP_V33 (3.3V) for the touch panel controller. The backlight uses LED_A and LED_K with a typical current of 80mA and forward voltage of 3.0±0.2V.
- Backlight: 4 white LEDs in parallel, with typical forward voltage (Vf) of 3.0±0.2V and forward current (If) of 80mA.
- Touch Panel: The module includes an integrated capacitive touch panel (CTP) with an I²C interface (CTP_SDA, CTP_SCL), an interrupt pin (CTP_INT), and a reset pin (CTP_RST). It is powered by CTP_V33.
- Driver IC: ST7789P3
- Supplier: Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Specification | Unit |
|---|---|---|
| Model | LSC028I14-M-V1 | - |
| Display Size (Diagonal) | 2.83 | inch |
| Resolution | 240(RGB) × 320 | pixels |
| Display Colors | 262K | colors |
| Module Type | COG+FPC+B/L+CTP | - |
| Viewing Direction | ALL (as indicated in outline drawing) | - |
| Chromaticity (White, Typ.) | X=0.30±0.03, Y=0.32±0.03 | - |
| Module Luminance (Typ.) | 300 | cd/m² |
| Operating Temperature | -20 ~ +70 | °C |
| Storage Temperature | -30 ~ +80 | °C |
| RoHS Compliance | Yes | - |
3.2 Interface & Electrical Specifications
3.2.1 Absolute Maximum Ratings
The document indicates the module is designed for specific voltage levels. While a full table isn't explicitly extracted, the pin definition and typical operating conditions provide critical limits. The power supply VDD is typically 3.3V.
3.2.2 Recommended DC Electrical Characteristics
| Item | Symbol | Condition | Typ. | Unit |
|---|---|---|---|---|
| LCD Driver Supply Voltage | VDD | - | 3.3 | V |
| Touch Panel Supply Voltage | CTP_V33 | - | 3.3 | V |
| Backlight Forward Voltage | VF | IF=80mA | 3.0±0.2 | V |
| Backlight Forward Current | IF | - | 80 | mA |
3.2.3 Pin Description (From LCM Outline Dimension)
The module uses an FPC connector. The pin description from the mechanical drawing provides the key signals. The interface is an 8080 MCU parallel type.
| Pin No. | Symbol | Description |
|---|---|---|
| 1, 27, 28, 30 | GND | Ground. |
| 2, 3, 4, 5 | RESE, DB10, DB9, DB8 | Reset, Data Bus bits (part of 16-bit interface). |
| 6, 7, 15, 14, 13, 12, 11, 10, 9, 8 | D7~D0 | 8-bit Data Bus. |
| 16 | RD | 8080 MCU Read signal. |
| 17 | WR | 8080 MCU Write signal. |
| 18 | RS | 8080 MCU Register Select signal (Data/Command). |
| 19 | CS | 8080 MCU Chip Select signal. |
| 20 | TE | Tearing effect output. |
| 21 | V33 | I/O System Power Supply (3.3V). |
| 22, 23, 24, 25, 26 | REVA, VCC, GND, GND, TE | Various signals and power. |
| 23 | LED_A | LED Anode. |
| 24 | LED_K | LED Cathode. |
| 29~31 | CTP_INT, CTP_RST, CTP_V33 | Touch Panel Interrupt, Reset, and Power (3.3V). |
| 32 | CTP_SDA | Touch Panel I²C Data line. |
| 33 | CTP_SCL | Touch Panel I²C Clock line. |
3.3 Optical Specifications (From Outline Dimension)
The optical specifications are embedded within the mechanical drawing notes. Key parameters include:
- Module Luminance (with CTP): 250 cd/m² (MIN), 300 cd/m² (TYP).
- Chromaticity (White): X=0.30±0.03, Y=0.32±0.03.
- Viewing Direction: ALL (IPS-type display).
- LCD Panel: GV028QVQ-N81-3QPO from BOE.
- Polarizer: Upper: 0.15mm matte / Lower: 0.15mm glossy.
4. Application Guidelines & Critical Notes
Intended Use
- Standard 2.83-inch portrait display applications (e.g., handheld devices, medical equipment, industrial controls).
- Systems requiring a 240×320 resolution display with an 8080 MCU parallel interface.
- Applications needing an integrated capacitive touch panel with an I²C interface.
- Systems requiring an IPS display for wide viewing angles ("ALL" direction).
Critical Design Considerations
- 8080 MCU Parallel Interface (8/16-bit): The module uses an 8080 MCU parallel interface. The host must be configured to operate in 8080 MCU mode with the correct data bus width. The pin definition suggests a 16-bit bus is available, but 8-bit mode is also supported.
- Dual Power Supplies (3.3V): The module requires a 3.3V supply for the LCD driver (VDD/V33) and a separate 3.3V supply for the touch panel (CTP_V33). Ensure proper decoupling for both.
- Constant-Current Backlight Driver: The backlight requires a constant current source of 80mA. The forward voltage is typically 3.0V. An external constant current driver circuit is necessary.
- I²C Capacitive Touch Panel Interface: The CTP uses an I²C interface (CTP_SCL, CTP_SDA) with interrupt (CTP_INT) and reset (CTP_RST) pins. The host must initialize the touch controller and communicate over I²C to read touch data.
- Mechanical Integration (Outline Dimensions): The mechanical drawing provides precise dimensions for the LCM and LCM+CTP assembly. Note the detailed tolerances and recommended window openings for the housing and CTP foam (e.g., "建议CTP 泡棉开窗比LCD A.A单边只大0.7mm"). These must be strictly followed to avoid mechanical interference.
- FPC Bending: The mechanical drawing includes an FPC bending diagram. The FPC must be bent according to this diagram to fit the final product enclosure.
- Temperature Range (-20°C to +70°C Operating): A standard industrial temperature range.
- EMI Shielding: The module includes an EMI shielding film (EMI屏蔽膜) which must be properly grounded as per the drawing.
Handling & Compliance
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass – handle with care. Avoid mechanical stress on the active area, FPC, or touch panel.
- Do not attempt to disassemble or modify the LCD module.
- The module is RoHS compliant.
5. Conclusion & Design-In Support
The LSC028I14-M-V1 specification details a compact 2.83-inch (240×320) IPS TFT LCD module with an integrated capacitive touch panel and an 8080 MCU parallel interface — a versatile and complete display solution for a wide range of embedded applications.
Key Strengths
- Complete Display Solution: Integrates LCD, backlight, and capacitive touch panel in a single module, simplifying system design.
- IPS Technology with Wide Viewing Angle: "ALL" direction viewing angle ensures excellent visibility from any position.
- Classic 8080 MCU Parallel Interface: Simple and widely compatible, ideal for many microcontrollers.
- Touch Panel with Standard I²C Interface: Easy to integrate with most microcontrollers.
- High Brightness: 300 cd/m² (Typ.) brightness suitable for indoor applications.
Main Design Focus
- The critical design tasks are properly configuring the host processor's 8080 MCU parallel interface to match the module's timing (refer to the driver IC datasheet) and data bus width, providing stable 3.3V power supplies for both the LCD and touch panel, and implementing a constant-current LED backlight driver (80mA).
- Supporting requirements: Connect all ground pins. Ensure the RESET pin is driven low for a proper initialization sequence. Allow sufficient time for the module to stabilize after power-up. Follow the recommended mechanical housing window sizes and FPC bending diagram precisely.
This module is a robust and practical choice for engineers designing embedded systems that require a reliable, high-quality display with integrated touch functionality.
