LS0154I06-S-V1 1.54 inch TFT-LCD Module 240x240 262k Colors
1. Executive Summary & Product Positioning
The LS0154I06-S-V1 is a 1.54-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module developed by 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co., Ltd). It is composed of a TFT-LCD panel, a driver circuit, and a backlight unit. The panel size is 1.54 inch and the resolution is 240(RGB)*240, the panel can display up to 262k colors.
Product Positioning: This module features a compact 1.54-inch square panel, providing a standard resolution for small-sized embedded displays. With a standard SPI (4-Line Serial) interface, it is well-suited for a wide range of applications such as industrial HMI, smart home devices, wearable devices, and other embedded systems requiring a compact and reliable display solution.
2. Detailed Product Overview & Architecture
The module's architecture is designed for robust performance and easy integration. The primary components include:
- TFT-LCD Panel: 1.54-inch diagonal, a-Si TFT active matrix, transmissive. Resolution is 240(RGB) × 240 pixels.
- Driver Circuit: The module integrates a driver circuit (driver IC), communicating via an SPI (4-Line Serial) Interface.
- Backlight Unit (B/L): A white LED backlight unit. The backlight driving condition is defined by the LEDA and LEDK pins.
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L.
- Interface: The module communicates via a 15-pin FPC connector. The display interface is 4-Line SPI (Serial Interface).
- Display Mode: Active matrix TFT, Transmissive type.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 1.54 inches |
| Resolution (Dots) | 240(RGB) × 240 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Input Data Interface | SPI (4-Line Serial) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
3.2 Absolute Maximum Ratings
Stress beyond those listed may cause permanent damage.
| 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 | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
3.3 Electrical Characteristics
3.3.1 Recommended Operating Conditions
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | 2.4 | 2.8 | 3.3 | V |
| I/O supply voltage | 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 Pin Assignment (15-Pin FPC)
Connector: A 15-pin FPC. Interface: 4-Line SPI (Serial Interface).
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | LEDK | P | Power for LED backlight cathode. |
| 2 | GND | P | Ground. |
| 3 | TE | O | Tearing effect signal is used to synchronize MCU to frame memory. |
| 4 | SDA | I | SPI interface input pin. |
| 5 | D/C | O | Display data/command selection pin in 4-line serial interface. |
| 6 | SCL | I | Serial clock pin. |
| 7 | CS | I | Chip selection pin. |
| 8 | RESET | I | This signal will reset the device and it must be applied to properly initialize the chip. |
| 9 | IOVCC | P | Power supply (I/O). |
| 10 | VCC | P | Power supply. |
| 11 | VCC | P | Power supply. |
| 12 | GND | P | Ground. |
| 13 | GND | P | Ground. |
| 14 | LEDA | P | Power for LED backlight anode. |
| 15 | LEDA | P | Power for LED backlight anode. |
3.5 Timing Characteristics
3.5.1 4-Line Serial Interface Characteristics
Test conditions: VDDI=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
Note: The timing parameters for this module are listed as TBD (To Be Determined) in the specification.
| Signal | Symbol | Parameter | MIN | MAX | Unit | Description |
|---|---|---|---|---|---|---|
| SCL | TSCYCR | Serial clock cycle (Read) | TBD | - | ns | -read command & data ram |
| SCL | TSHR | SCL "H" pulse width (Read) | TBD | - | ns | -read command & data ram |
| SCL | TSLR | SCL "L" pulse width (Read) | TBD | - | ns | -read command & data ram |
| D/CX | TDCS | D/CX setup time | TBD | - | ns | - |
| D/CX | TDCH | D/CX hold time | TBD | - | ns | - |
| SDA (DIN) | TSDS | Data setup time | TBD | - | ns | - |
| SDA (DIN) | TSDH | Data hold time | TBD | - | ns | - |
| DOUT | TACC | Access time | TBD | TBD | ns | For maximum CL=30pF For minimum CL=8pF |
| DOUT | TOH | Output disable time | TBD | TBD | ns | For maximum CL=30pF For minimum CL=8pF |
3.6 Records of Version
| Version | Revise Date | Page | Content |
|---|---|---|---|
| 00 | 2026-2-2 | ALL | New released |
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 2.8V (Typ.) power supply for VCC and 1.8V (Typ.) for IOVCC. Ensure the power supply ripple is minimized.
- Interface: This module uses a standard 4-Line SPI (Serial Interface) protocol. The host microcontroller must be configured for this protocol, managing signals such as CS, D/C, SCL, and SDA.
- Backlight Driver (External): An external constant current driver is required to supply the backlight via the LEDA and LEDK pins.
- Reset: A hardware reset pin (RESET, Pin 8) is provided. It must be applied to properly initialize the chip.
- Handling Precautions: Handle the module with care to avoid damage to the glass or FPC. Ground yourself to prevent electrostatic discharge (ESD).
5. Conclusion & Design-In Support
The LS0154I06-S-V1 from Lesson Smart Display Technology is a 1.54-inch TFT-LCD module. It is a compact, standard-resolution square display solution suitable for a wide variety of embedded display applications such as industrial HMI, smart home devices, and wearable devices.
For successful design-in, engineers should:
- Obtain and review the complete, official Product Specification (Revision 1.0) for the full mechanical drawing and the driver IC datasheet for detailed command initialization.
- Design a clean 2.8V/1.8V power supply and a backlight constant current driver circuit.
- Configure the host MCU's SPI interface to match the timing specifications detailed in this datasheet.
- Contact the manufacturer for evaluation modules, sample requests, and further technical support during the design-in phase.
This module is designed to provide a reliable and vibrant display solution for a wide array of applications.
