Product Subtitle / Keywords:
2.83 Inch Display, 240(RGB)×320 Resolution, Transmissive a-Si TFT IPS, RGB Interface, COG+FPC+B/L, 262K Colors, 40-Pin, ST7789P3 Driver, 50.0×69.1×2.3 mm, -10°C~60°C Operating Temperature, -20°C~70°C Storage Temperature
1. Executive Summary & Product Positioning
The LS0283I02-R-V1, developed by Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 2.83-inch transmissive amorphous Silicon TFT-LCD (a-Si TFT-LCD) module with IPS (In-Plane Switching) technology.
This product specification (Revision 1.0, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), physical features, mechanical dimensions, absolute maximum ratings, detailed electrical characteristics, complete RGB Interface pinout and timing, and comprehensive electro-optical performance. It delivers a resolution of 240(RGB)×320 with 262K-color display capability, driven by the ST7789P3 controller.
The document provides the core parameters necessary for system integration into compact embedded display applications. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances 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).
- Display Mode: Active matrix TFT, Transmissive type.
- Display Format: Graphic 240(RGB)×320 Dot-matrix.
- 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.
- Input Data: RGB interface.
- Viewing Direction (Grayscale Inversion): Free (IPS) – wide viewing angle in all directions.
- Drive IC: ST7789P3.
- Connector Pin Count: 40-Pin.
- Approval Status: ☑ Approved Product Specification only (as per signature block).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Specification | Unit |
|---|---|---|
| Module size (H×V×D) | 50.0 × 69.1 × 2.3 | mm |
| Active area (H×V) | 43.6 × 58.02 | mm |
| Number of dots / Resolution | 240(RGB) × 320 | pixel |
| Panel Size (Diagonal) | 2.83 | inch |
Critical Mechanical Design Notes (from outline dimension drawing):
- Display Type: Main LCD: Transmissive, IPS.
- Operating Temperature: -10°C ~ 60°C.
- Storage Temperature: -20°C ~ 70°C.
- Backlight: 4 Chip-White LED Parallel.
- ROHS Compliance: Yes.
- General Tolerance: ±0.20 mm.
- Angular Tolerance: ∠ ±1/4°.
- Enclosure Design Notes:
- It is recommended that the housing visible area be 0.3mm smaller per side than the VAmds.
- The housing foam window should be 0.6mm larger per side than the VAmds.
- The TP edge cannot contact metal conductors.
- LCM Total Thickness: 2.30±0.15 mm.
- FPC+PI Reinforcement Total Thickness: 0.35 mm.
- Polarizer Thickness: POL 0.15 mm.
- Silver Paste Points: Present on the module.
- Yellow Insulation Paper: Included for handling during assembly.
- Release Tape/Sticker: Included (易撕贴).
- Alignment Mark: White alignment line (白色对位线).
- Backlight Circuit: IF=80mA, Vf=2.8-3.2V(TYP).
3.2 Electrical & Interface Specifications
3.2.1 Absolute Maximum Ratings
(Not explicitly provided in the extracted document excerpt; refer to Section 5 of the full specification.)
3.2.2 Electrical Characteristics (DC – Recommended Operating Conditions)
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | 2.4 | 2.75 | 3.3 | V |
| 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 |
3.2.3 Pin Description (40-pin FPC)
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | LEDA | P | Power for LED backlight anode |
| 2 | LEDK | P | Power for LED backlight cathode |
| 3 | VCC | P | Power Supply |
| 4 | IOVCC | P | Power Supply |
| 5 | GND | P | Ground |
| 6 | PCLK | I | Dot clock signal for RGB interface operation |
| 7 | DE | I | Data enable signal for RGB interface operation |
| 8 | HS | I | Horizontal (Line) synchronizing input signal for RGB interface operation |
| 9 | VS | I | Vertical (Frame) synchronizing input signal for RGB interface operation |
| 10 | GND | P | Ground |
| 11 | RESET | I | This signal will reset the device and it must be applied to properly initialize the chip |
| 12 | CS | I | Chip selection pin |
| 13 | SCL | I | Serial interface Clock Input |
| 14 | SDA | I/O | Serial interface DATA Input/Output |
| 15 | GND | P | Ground |
| 16-31 | DB0 ~ DB15 | I | RGB interface data bus (16-bit) |
| 32 | TE | O | Tearing effect signal is used to synchronize MCU to frame memory MCU writing |
| 33-34 | GND | P | Ground |
| 35-40 | TP_2.8V/NC, TP_INT/NC, TP_SCL/NC, TP_SDA/NC, TP_RST/NC, TP_GND/NC | — | Touch Panel interface pins (Not Connected in this module) |
Interface Summary:
- RGB Interface: Uses PCLK (Pixel Clock), HS (Horizontal Sync), VS (Vertical Sync), DE (Data Enable), and a 16-bit data bus (DB0-DB15) for high-speed parallel data transmission.
- Serial Interface (SPI): The module also includes SCL (Serial Clock) and SDA (Serial Data) pins, typically used for command/register configuration.
- Control Pins: RESET (Reset), CS (Chip Select), TE (Tearing Effect).
- Backlight: Dedicated LEDA (Anode, Pin 1) and LEDK (Cathode, Pin 2) pins.
- Power: VCC (Pin 3) for main logic, IOVCC (Pin 4) for I/O interface, GND (Pins 5, 10, 15, 33, 34) for ground.
- Touch Panel Pins (Pins 35-40): These pins are designated as NC (Not Connected) in this module variant.
3.2.4 RGB Interface Timing Characteristics
Conditions: VDDI=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Signal | Symbol | Parameter | MIN | MAX | Unit | Description |
|---|---|---|---|---|---|---|
| HSYNC, VSYNC | $T_{SYNC}$ | VSYNC, HSYNC Setup Time | 30 | - | ns | |
| ENABLE | $T_{ENS}$ | Enable Setup Time | 25 | - | ns | |
| ENABLE | $T_{ENH}$ | Enable Hold Time | 25 | - | ns | |
| DOTCLK | PWDH | DOTCLK High-level Pulse Width | 60 | - | ns | |
| DOTCLK | PWDL | DOTCLK Low-level Pulse Width | 60 | - | ns | |
| DOTCLK | $T_{CYCD}$ | DOTCLK Cycle Time | 120 | - | ns | |
| DOTCLK | Trghr, Trghf | DOTCLK Rise/Fall time | - | 20 | ns | |
| DB | $T_{PDS}$ | PD Data Setup Time | 50 | - | ns | |
| DB | $T_{PDH}$ | PD Data Hold Time | 50 | - | ns |
Key Timing Observations:
- The maximum DOTCLK frequency is approximately 8.3 MHz (1/120 ns).
- Data setup and hold times are 50 ns, requiring careful PCB layout for signal integrity.
3.2.5 Backlight Unit
| Item | Specification | Unit |
|---|---|---|
| LED Circuit | 4 Chip-White LED Parallel | — |
| Drive Condition | IF = 80mA, Vf = 2.8-3.2V (TYP) | — |
3.3 Optical & Electro-Optical Characteristics
(Not explicitly provided in the extracted document excerpt; refer to Section 8 of the full specification.)
3.4 Version Record
(Not explicitly provided in the extracted document excerpt; refer to Section 9 of the full specification.)
4. Application Guidelines & Critical Notes
Intended Use
- Smartwatches, fitness trackers, and other wearable devices
- IoT display nodes and smart home controls
- Miniature handheld instruments
- Any application requiring a compact display with excellent IPS viewing angles and high-speed RGB interface
Critical Design Considerations
-
Interface (RGB): This module uses a parallel RGB interface for high-speed data transmission. The host MCU must have an RGB LCD controller with at least 20+ GPIOs (PCLK, HS, VS, DE, 16 data lines) to drive the display.
-
Power Supply:
- Provide stable VCC (2.4V to 3.3V, 2.75V typical) for the main logic (connected to Pin 3).
- Provide stable IOVCC (1.65V to 3.3V, 1.8V typical) for the I/O interface (connected to Pin 4).
- The backlight requires a constant-current LED driver connected to LEDA (Anode, Pin 1) and LEDK (Cathode, Pin 2), set to 80 mA at approximately 2.8-3.2V (TYP).
-
TE (Tearing Effect) Pin (Pin 32):
- The TE pin outputs the display's tearing effect signal.
- This signal can be used to synchronize MCU frame writes with the display's internal refresh cycle, preventing screen tearing.
- If not used, leave this pin open.
-
Mechanical Integration:
- Module Outline: 50.0mm (H) × 69.1mm (V) × 2.3mm (D).
- Active Area: 43.6mm × 58.02mm.
- FPC: The module uses a 40-pin FPC.
- Enclosure Design: The document provides specific recommendations for enclosure window openings relative to the LCD AA (Active Area):
- Housing visible area: 0.3mm smaller per side than VAmds.
- Housing foam window: 0.6mm larger per side than VAmds.
- TP edge cannot contact metal conductors.
-
Viewing Angle Characteristics:
This is an IPS panel with excellent viewing angle performance:- Free (IPS) viewing direction ensures consistent image quality from any perspective.
-
Optical Performance:
- Resolution: 240×320 (QVGA) – standard resolution for compact displays.
- Display Colors: Up to 262K colors (18-bit color depth).
- Display Mode: Transmissive with IPS technology for excellent color reproduction and wide viewing angles.
-
Temperature Limits:
- Operating Temperature: -10°C to +60°C.
- Storage Temperature: -20°C to +70°C.
Handling & Compliance
- The module is ROHS compliant.
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and a 40-pin FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
- The module has a total thickness of 2.3mm – be careful when handling to avoid flexing.
- The module includes a yellow insulation paper and release tape/sticker for handling during assembly.
5. Conclusion & Design-In Support
The LS0283I02-R-V1 specification details a high-performance 2.83-inch IPS display module with an RGB interface and ST7789P3 driver — an excellent choice for compact display applications requiring high-speed parallel data transfer and excellent image quality.
Key Strengths:
-
High-Speed RGB Interface: The 16-bit parallel RGB interface provides high bandwidth for smooth video and animation playback.
-
Excellent IPS Technology: Free (IPS) viewing direction ensures consistent image quality from any perspective.
-
Standard 40-pin FPC: The 40-pin FPC provides a robust connection interface with dedicated pins for RGB data, control signals, and power.
-
TE (Tearing Effect) Support: The dedicated TE pin enables tear-free graphics synchronization.
-
Wide Operating Temperature Range: -10°C to +60°C for operation and -20°C to +70°C for storage.
-
Standard Resolution: 240×320 (QVGA) resolution is widely supported by many MCUs and graphics libraries.
Main Design Focus:
- The critical design task is properly implementing the RGB interface timing to ensure reliable high-speed data transfer.
- Supporting requirements:
- Provide stable VCC (2.75V typical) and IOVCC (1.8V typical) power.
- Provide a constant-current backlight driver set to 80 mA at 2.8-3.2V (TYP).
- Mechanical integration — the module outline is 50.0mm × 69.1mm × 2.3mm.
- FPC connector — verify the 40-pin FPC.
- Enclosure design — follow the recommended window opening dimensions relative to the LCD AA.
This module is 43.6mm × 58.02mm.
This module is an excellent choice for high-end wearable devices, smartwatches, and any compact IoT application requiring a high-speed RGB interface IPS display with excellent image quality.
