LSC0128I09-S-V1: 1.28-inch Round LCD Module, 240×240, 4-Line SPI, 262K Colors, IPS/Free Viewing, COG+FPC+B/L+CTP, ST77912
Product Subtitle / Keywords
1.28 Inch Display, 240×240 Resolution, Transmissive a-Si TFT-LCD Module, COG+FPC+B/L+CTP Module Type, 4-Line Serial SPI Interface, 262K Colors, IPS/Free Viewing Angle, Driver IC: ST77912, Module Size: 54 × 54 × 2.88 mm, Active Area: 32.4 × 32.4 mm, Operating Temp: -10°C ~ 60°C, Storage Temp: -20°C ~ 70°C, 2 Chip White LED Backlight (If=40mA; Vf=3.0~3.4V), RoHS Compliant
1. Executive Summary And Product Positioning
The LSC0128I09-S-V1 is a 1.28-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
This product specification (Revision 1.0) serves as the definitive technical document. It is composed of a TFT-LCD panel, a driver circuit, a backlight unit, and includes a capacitive touch panel (CTP). The panel has a resolution of 240(RGB)*240 and can display up to 262k colors.
The unequivocal recommendation for engineers is to strictly adhere to the absolute maximum ratings, electrical specifications, and interface timing described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview And Architecture
- Core Technology: Transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
- Module Type: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight) + CTP (Capacitive Touch Panel).
- Display Format: Graphic 240(RGB) × 240 pixel array.
- Display Characteristics: Capable of displaying up to 262k colors.
- Interface Type: 4-line Serial SPI interface.
- Backlight Unit: 2 CHIP WHITE LED (If=40mA; Vf=3.0~3.4V).
- Special Features: Free (IPS) optimum viewing angle, High resolution for its size (1.28-inch), RoHS compliant.
- Approval Status: Approved Product Specification only (Revision 1.0).
3. Exhaustive Technical Specifications
3.1 Mechanical & General Specification
| Parameter | Specification | Unit |
|---|---|---|
| Panel Size | 1.28'' (Diagonal) | Inch |
| Resolution | 240(RGB)*240 | pixels |
| Display Type | Transmissive | - |
| Display Colors | 262K | colors |
| Module size (H×V×D) | 54 × 54 × 2.88 | mm |
| Active area (H×V) | 32.4 × 32.4 | mm |
| Optimum Viewing Angle | Free (IPS) | - |
| Module Type | COG+FPC+B/L+CTP | - |
| Main LCD Driver IC | ST77912 | - |
3.2 Absolute Maximum Ratings
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 4.6 | V | Note1 Note2 |
| Operating temperature | TOPR | -10 | 60 | °C | Note1 Note2 |
| Storage temperature | TSTR | -20 | 70 | °C | Note1 Note2 |
3.3 Electrical Characteristics
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage (Main) | VCC | 2.65 | 2.8 | 3.3 | V |
| Supply voltage (I/O) | IOVCC | 1.65 | 1.8 | 3.3 | V |
| Input Voltage (L level) | VIL | 0 | - | 0.3*IOVCC | V |
| Input Voltage (H level) | VIH | 0.7*IOVCC | - | IOVCC | V |
3.4 Interface Connection (15-Pin SPI Interface)
| PIN NO. | Symbol | Function |
|---|---|---|
| 1 | GND | Ground |
| 2 | LEDK | Power for LED backlight cathode |
| 3 | LEDA | Power for LED backlight anode |
| 4 | VDD | Power supply |
| 5 | D/C | Command and Data select pin |
| 6 | CS | Chip select pin |
| 7 | SCL | Serial clock pin |
| 8 | SDA | Serial data input/output PIN |
| 9 | RESET | Reset pin. |
| 10 | TP_VCI | TP power supply |
| 11 | GND | Ground |
| 12 | TP_RST | Reset Pin for TP |
| 13 | TP_INT | Interrupt signal for TP |
| 14 | TP_SDA | SDA pin for TP |
| 15 | TP_SCL | SCL pin for TP |
4. Application Scenario
The LSC0128I09-S-V1 is a small, high-resolution display with an integrated touch panel, making it ideal for embedded systems requiring a compact, interactive display. Its 1.28-inch size is well-suited for smart wearables (like smartwatches), IoT devices, handheld instruments, and other small-scale Human-Machine Interface (HMI) applications. The free viewing angle and 262K color capability ensure clear and vibrant visuals from any direction.
5. Handling Precautions And Compliance
The LCD panel is made of glass and is fragile. The polarizer surface is easily scratched. The module should be handled with care to avoid applying pressure on the display area. ESD (Electrostatic Discharge) protection is mandatory throughout handling and assembly. The module should be stored in a clean, dry environment away from direct sunlight and corrosive gases. It is strongly recommended to read the full specification document (LSC0128I09-S-V1 Product Specification Revision 1.0) before integration and to test the module under application-specific conditions. The manufacturer disclaims liability for damages resulting from improper use or modification. The product is RoHS compliant.
