LSC032I02-R-V1 3.2 inch TFT-LCD Module 240x320 262k Colors
1. Executive Summary & Product Positioning
The LSC032I02-R-V1 is a 3.2-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). The panel size is 3.2 inch and the resolution is 240(RGB)*320, the panel can display up to 262k colors.
Product Positioning: This module features a standard 3.2-inch display with both RGB and Serial interfaces. It is well-suited for a wide range of applications such as industrial control panels, handheld 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: 3.2-inch diagonal, a-Si TFT active matrix, transmissive. Resolution is 240(RGB) × 320 pixels.
- Driver Circuit: The module integrates a driver circuit, communicating via RGB Interface and 3-line Serial Interface for configuration.
- Backlight Unit (B/L): A white LED backlight. The typical driving condition is IF=100mA, Vf=2.7-3.4V (TYP).
- Mechanical Construction: COG (Chip-on-Glass) + FPC (with PI reinforcement) + B/L.
- Interface: The module communicates via a 40-pin FPC connector. The display interface is RGB Interface, with a 3-line Serial Interface for configuration.
- Display Mode: Active matrix TFT, Transmissive type.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 3.2 inches |
| Resolution (Dots) | 240(RGB) × 320 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Input Data Interface | RGB Interface (main), 3-line Serial Interface (control) |
| Display Mode | Active matrix TFT, Transmissive type |
| Backlight Type | White LED (1 Chip) |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -20°C to +70°C |
3.2 Electrical Characteristics
3.2.1 Recommended Operating Conditions
Condition: VDDI=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Item | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Power Supply Voltage 1 | VDDI | 1.65 | 3.3 | V |
| Power Supply Voltage 2 | VDD | 2.4 | 3.3 | V |
3.2.2 Backlight LED Characteristics
The backlight drive condition is IF=100mA, Vf=2.7-3.4V (TYP).
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Forward Voltage | Vf | 2.7 | 3.4 | V | |
| Forward Current | IF | -- | 100 | -- | mA |
3.3 Interface Pin Assignment (40-Pin FPC)
The module communicates via a 40-pin FPC connector. The interface is RGB + Serial.
| 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_xx/NC | -- | No Connection (Touch Panel pins - not used) |
3.4 Timing Characteristics
3.4.1 RGB Interface Timing Characteristics
Condition: VDD1=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Signal | Symbol | Parameter | MIN | MAX | Unit |
|---|---|---|---|---|---|
| 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 |
3.4.2 3-Line Serial Interface Characteristics
Condition: VDD1=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Signal | Symbol | Parameter | MIN | MAX | Unit |
|---|---|---|---|---|---|
| CSX | Tcss | Chip select setup time (write) | 15 | -- | ns |
| CSX | TCSH | Chip select hold time (write) | 15 | -- | ns |
| CSX | Tcss | Chip select setup time (read) | 60 | -- | ns |
| CSX | Tscc | Chip select hold time (read) | 65 | -- | ns |
| CSX | TCHW | Chip select "H" pulse width | 40 | -- | ns |
| SCL | Tsycw | Serial clock cycle (Write) | 16 | -- | ns |
| SCL | TSHW | SCL "H" pulse width (Write) | 7 | -- | ns |
| SCL | TSLW | SCL "L" pulse width (Write) | 7 | -- | ns |
| SDA (DIN) | TSDS | Data setup time | 7 | -- | ns |
| SDA (DIN) | TSDH | Data hold time | 7 | -- | ns |
3.5 Design Notes from Documentation
- B/L Driver: The backlight driving condition is IF=100mA, Vf=2.7-3.4V (TYP).
- Interface: This module uses an RGB interface for pixel data and a 3-line Serial Interface for command/register configuration. The serial interface is used for setting up the module (e.g., resolution, orientation).
- Reset: The RESET pin (Pin 11) must be applied to properly initialize the chip.
- Serial Interface Note: In the read sequence of the serial interface, a 500ns delay time is needed between the read command and the first read clock.
- Touch Pins: Pins 35-40 are designated for touch panel interface but are listed as NC (No Connection) for this module variant.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 2.4V to 3.3V supply for VCC and 1.65V to 3.3V for IOVCC. Ensure the power supply ripple is minimized.
- Interface: This module uses a standard RGB Interface protocol for video data and a Serial Interface for configuration. The host processor must be configured for these protocols.
- Backlight Driver (External): An external constant current driver is required to supply the backlight via the LEDA and LEDK pins. The required driving condition is 100mA total current at 2.7V to 3.4V forward voltage.
- Reset: A hardware reset pin (RESET, Pin 11) 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).
- Initialization: After power up, the serial interface command `Sleep Out` must not be sent for at least 120ms after reset.
5. Conclusion & Design-In Support
The LSC032I02-R-V1 from Lesson Smart Display Technology is a 3.2-inch TFT-LCD module with both RGB and Serial (control) interfaces. It is a compact, reliable display solution suitable for a wide variety of embedded display applications such as industrial control panels and handheld 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 (Typ) power supply and a backlight constant current driver circuit (100mA, up to 3.4V).
- Configure the host processor's RGB and Serial interfaces 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.
