LS0154I06-S-V1: 1.54-Inch TFT LCD Module, 240x240 Resolution, 262K Colors, SPI Interface

Product Main Title:
LS0154I06-S-V1: 1.54-Inch TFT LCD Module, 240x240 Resolution, 262K Colors, SPI Interface

Product Subtitle / Keywords:
1.54 Inch Display, 240x240 Resolution, Transmissive a-Si TFT, SPI Interface, COG+FPC+B/L, 262K Colors, Standard Temperature Range, RoHS Compliant

Comprehensive Technical Specification & Application Guide

1. Executive Summary & Product Positioning

The LS0154I06-S-V1, developed by LESSON (Wan'an) Zhixian Technology Co., Ltd., is a 1.54-inch transmissive amorphous Silicon TFT-LCD module. This product specification book serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), mechanical dimensions, absolute maximum ratings, detailed electrical characteristics, and interface functionality. It delivers a square resolution of 240(RGB)×240 with 262K-color display capability. The document provides the core parameters necessary for system integration, including critical voltage and temperature limits. Engineers should use this document to guide the electrical connection and environmental design of the module, ensuring operation within the specified safe limits to achieve reliable performance.

2. Detailed Product Overview & Architecture

• Core Technology: Transmissive-type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display).
• Display Characteristics: Capable of displaying up to 262 thousand colors.
• Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit). Composed of a TFT-LCD panel, a driver circuit, and a backlight unit.
• Interface: SPI (Serial Peripheral Interface).
• Panel Size: 1.54 inch diagonal.

3. Exhaustive Technical Specifications

3.1 Mechanical & Physical Specifications

• Panel Size (Diagonal): 1.54 inches
• Resolution: 240 (RGB) × 240 pixels
• Module Type: COG+FPC+B/L

(Note: Specific dimensions for Active Area and Module Size are not provided in the given context excerpt. Refer to the full specification document for detailed mechanical drawings.)

3.2 Electrical & Interface Specifications

3.2.1 Absolute Maximum Ratings

Notes (from general spec conventions):

• Note1: Stresses beyond these ratings may cause permanent damage.
• Note2: Functional operation under these conditions is not implied.

3.2.2 Pin Description (15-pin FPC)

Interface Note: The pinout indicates a standard 4-line SPI interface using CS (Chip Select), SCL (Clock), SDA (Data), and D/C (Data/Command) pins. The TE (Tearing Effect) output is available for synchronization.

3.2.3 Electrical Characteristics & Interface Timing

(Note: Typical operating voltages (VCC, IOVCC), logic levels (VIH, VIL), and detailed SPI timing parameters (clock frequency, setup/hold times) are not provided in the given context excerpt. These are critical for design and must be obtained from the full specification document.)

3.2.4 Backlight Unit

• Configuration: White LED(s).
• Connection: Dedicated anode (LEDA, pins 14 & 15) and cathode (LEDK, pin 1) pins. The dual LEDA pins suggest a parallel connection for lower resistance/higher current capability.

3.3 Optical & Electro-Optical Characteristics

(Note: Specific values for Luminance, Contrast Ratio, Viewing Angles, Response Time, etc., are not provided in the given context excerpt. Refer to the full specification document for complete optical tables.)

4. Application Guidelines & Critical Notes

• Intended Use: Wearable devices, small handheld instruments, IoT device interfaces, hobbyist projects—applications requiring a compact, square color display with a common SPI interface.
• Critical Design Considerations:
  1. Absolute Maximum Ratings: Never exceed the -0.3V to +4.6V range on VCC and IOVCC pins, or the -20°C to +70°C operating temperature. Doing so risks immediate damage.
  2. Dual Power Rails: This module requires two power supplies: VCC (for the panel's analog circuits) and IOVCC (for the digital I/O logic). Their typical operating voltages must be confirmed from the full spec.
  3. SPI Interface: The host MCU's SPI peripheral must be configured to communicate with the display's driver IC. The presence of a D/C pin indicates command/data separation. The TE pin can be used to optimize frame updates and avoid tearing.
  4. Backlight Drive: Design a constant-current driver circuit for the backlight LEDs. The forward current (I_F) specification is required from the full document to set the correct drive level.
  5. Reset Circuit: Ensure the RESET pin is driven properly during power-up. A pull-up resistor and an MCU GPIO or dedicated reset IC are typical implementations.
  6. Multiple Ground Pins: Connect all GND pins (2, 12, 13) to a solid ground plane for noise immunity.
• Handling & Compliance: The module is assumed to be ROHS compliant (as per company standards). Observe standard ESD precautions during handling.

5. Conclusion & Design-In Support

The LS0154I06-S-V1 specification provides the foundational information for integrating a standard 1.54-inch SPI display module. Its key defined parameters are the absolute maximum ratings and the SPI-compatible pinout. However, successful integration requires the complete specification document to obtain missing critical data: typical operating voltages, DC electrical characteristics, detailed SPI timing diagrams, and complete optical performance tables. Once these are secured, designers can proceed with power supply design, SPI driver development, and mechanical integration, resulting in a reliable implementation of this compact color display.