LSL0154I07-S-V2: 1.54-inch TFT LCD Module, 240×240, SPI Interface, 262K Colors, Transmissive IPS
Product Subtitle / Keywords
1.54 Inch Display, 240(RGB)×240 Resolution, Transmissive a-Si TFT-LCD Module, COG+FPC+B/L+LENS Module Type, SPI Interface, 262K Colors, IPS Display Mode, Module Size (H×V×D): 41.6 × 71.3 × 3.03 mm, Active Area (H×V): 27.72 × 27.72 mm, Operating Temp: -20°C ~ +70°C, Storage Temp: -30°C ~ +80°C, Driver IC: ST7789P3, Backlight: White LED (3 chips, Parallel), If=60mA, Vf=3.1V (Typ.), Luminance: 350 cd/m² (with Cover Glass), Contrast Ratio: 900 (Typ.), Response Time: 30ms (Typ.), RoHS Compliant, Product Version 1.0 (Revision 01)
1. Executive Summary And Product Positioning
The LSL0154I07-S-V2 is a 1.54-inch diagonal transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, manufactured by Lesson (Wanan) Smart Display Technology Co., Ltd. This comprehensive module integrates a TFT-LCD panel, a driver circuit, a backlight unit (B/L), and a cover lens (LENS) into a single package. The product specification (Revision 1.0, Version 01) serves as the definitive technical document for this module.
This module features a resolution of 240(RGB)×240 pixels and is capable of displaying up to 262K colors. The module uses a 4-line serial (SPI) interface and is driven by the ST7789P3 driver IC.
2. Detailed Product Overview And Architecture
The LSL0154I07-S-V2 is a 1.54-inch square TFT display with an integrated lens. Its architecture is built around several key elements:
- Core Technology: Transmissive type a-Si TFT-LCD. The display mode is IPS.
- Module Type: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight) + LENS (Cover Lens).
- Display Format: Graphic 240(RGB)×240 Dot-matrix (square).
- Display Characteristics: Capable of displaying up to 262K colors.
- Interface Type: 4-line serial interface (SPI).
- Main LCD Driver IC: ST7789P3.
- Backlight Unit: The module utilizes a white LED backlight comprised of 3 chips in parallel (3 Chip-White LED Parallel). The circuit diagram shows the 3 LEDs in parallel. The document specifies a driving condition of IF=60mA and Vf=3.1V (Typ.).
- View Direction (Grayscale Inversion): IPS.
- Module Luminance (with Cover Glass): 350 cd/m².
- Contrast Ratio: 900:1 (Typ.).
- Response Time (Tr+Tf): 30ms (Typ.), 35ms (Max.).
- Approval Status: Approved Product Specification only (Revision 1.0).
3. Technical Specifications
3.1 General & Mechanical Specification
| Parameter | Specification | Unit |
|---|---|---|
| Panel Size | 1.54'' (Diagonal) | Inch |
| Module Outline (H×V×D) | 41.6 × 71.3 × 3.03 | mm |
| Active Area (H×V) | 27.72 × 27.72 | mm |
| Number of Dots | 240(RGB) × 240 | pixels |
| Display Type | a-Si TFT, Active Matrix, Transmissive | - |
| Display Colors | 262K | colors |
| Module Type | COG+FPC+B/L+LENS | - |
| Display Mode | IPS | - |
| View Direction (Grayscale Inversion) | IPS | - |
| Luminance (with Cover Glass, Typ.) | 350 | cd/m² |
| Contrast Ratio (Typ.) | 900 | - |
| Response Time (Tr+Tf, Typ.) | 30 | ms |
| Interface | SPI (4-Line Serial) | - |
| Driver IC | ST7789P3 | - |
| Backlight Type | White LED (3 chips, Parallel) | - |
3.2 Absolute Maximum Ratings
| Item | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | +4.6 | V |
| Supply voltage | IOVCC | -0.3 | +4.6 | V |
| Operating temperature | TOPR | -20 | 70 | °C |
| Storage temperature | TSTR | -30 | 80 | °C |
3.3 Electrical Characteristics
| Item | Symbol | Min | Typ | Max | Unit | Remark |
|---|---|---|---|---|---|---|
| Supply voltage | VCC | 2.4 | 2.8 | 3.3 | V | Note 1 |
| Supply voltage | IOVCC | 1.65 | 1.8 | 3.3 | V | Note 1 |
| Input Voltage (L level) | VIL | 0 | --- | 0.3*IOVCC | V | Note 1 |
| Input Voltage (H level) | VIH | 0.7*IOVCC | --- | IOVCC | V | Note 1 |
3.4 Backlight Driving Conditions
The module uses a white LED backlight comprised of 3 chips connected in parallel (3 Chip-White LED Parallel). The circuit diagram shows all 3 LEDs in parallel. The driving condition is: IF=60mA, Vf=3.1V (Typ.).
| Parameter | Symbol | Condition | Typ. | Unit |
|---|---|---|---|---|
| Backlight Forward Voltage | Vf | IF=60mA | 3.1 | V |
| Backlight Forward Current | IF | - | 60 | mA |
3.5 Interface Connection (FPC, 12 pins)
The module uses a 12-pin FPC connector with the following pin assignment:
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | LEDA | P | Power for LED backlight anode |
| 2 | LEDK | P | Power for LED backlight cathode |
| 3 | GND | P | Ground |
| 4 | TE | O | Tearing effect signal, synchronizes MCU to frame memory |
| 5 | DC | I | Display data/command selection (4-line SPI) |
| 6 | SDA | I | SPI interface input pin |
| 7 | SCK | I | Serial clock pin |
| 8 | RST | I | Reset signal for chip initialization |
| 9 | CS | I | Chip selection pin |
| 10 | IOVCC | P | I/O power supply |
| 11 | GND | P | Ground |
| 12 | VDD | P | Core power supply |
3.6 Electro-Optical Characteristics
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time | Tr+Tf | θx = θy = 0° | --- | 30 | 35 | ms | Note 1 |
| Contrast Ratio | CR | θx = θy = 0° | 700 | 900 | --- | - | Note 2 |
| Transmittance | T% | θx = θy = 0° | 4.6 | 5.4 | --- | % | - |
| Color Chromaticity (Red) | Rx | θx = θy = 0° | --- | 0.631 | --- | - | Note 4 |
| Color Chromaticity (Red) | Ry | θx = θy = 0° | --- | 0.330 | --- | - | Note 4 |
| Viewing angle (Top) | θT | CR > 10 | --- | 80 | --- | Deg. | Note 3 |
| Viewing angle (Bottom) | θB | CR > 10 | --- | 80 | --- | Deg. | Note 3 |
| Viewing angle (Left) | θL | CR > 10 | --- | 80 | --- | Deg. | Note 3 |
| Viewing angle (Right) | θR | CR > 10 | --- | 80 | --- | Deg. | Note 3 |
Notes:
1. Response time is the times needed for the luminance to change from 10% to 90% (Tr) and 90% to 10% (Tf).
2. Contrast Ratio is defined as the ratio of luminance when displaying a white raster to luminance when displaying a black raster.
3. Viewing angle is the angle at which the contrast ratio is greater than 10.
4. Color chromaticity coordinates are based on CIE1931.
4. Version History
The document records the following version changes:
| Version | Revise Date | Page | Content |
|---|---|---|---|
| 00 | 2026-5-20 | ALL | New released |
| 01 | 2026-6-4 | 4 | 排线金手指部位缩短2MM (FPC gold finger area shortened by 2MM) |
5. Application Scenario (Based on Spec)
Based on the product specification, this module is a standard 1.54-inch square TFT display with an integrated lens, suitable for general small-scale embedded applications requiring a color display with an SPI interface, such as smart wearables, IoT devices, and industrial control panels.
6. Handling Precautions And Compliance
The module is compliant with the RoHS directive. The document also includes specific mechanical design guidelines: case visual area should be smaller than VAmds by more than 0.3mm per side; foam opening should be larger than VAmds by more than 0.6mm per side; and the TP edge should not contact any metal conductor.
