1. Introduction
This manual provides essential information for the setup, operation, and maintenance of the simair LCD1602 16x2 Character LCD Display Module. The module is designed for displaying alphanumeric characters and symbols, featuring a 16-character by 2-line display. It operates at 5V and is available with various backlight colors and font options, including English/Japanese (JT) and English/Russian (CT) fonts.
2. Specifications
The following table details the technical specifications of the LCD1602 module:
| Parameter | Value |
|---|---|
| Model | SMH1602-E |
| Outline Size | 84.0(L) x 44.0(W) x 13.0(H) mm |
| View Area | 64.5 x 16.0 mm |
| View Direction | 6 O'clock |
| Character Size | 2.95 x 5.15 mm |
| Character Pitch | 3.5 x 5.6 mm |
| LCD Mode | STN (Blue/Yellow-Green), FSTN (Gray) |
| Operating Voltage | 5V/3.3V |
| Driver IC | SPLC780D or Equivalent |
| Net Weight | 50g |
| Driving Method | 1/16 DUTY, 1/5 BIAS |
| Number of Characters | 16 characters x 2 lines |
| Operating Temperature Range | -20℃ to +70℃ |
| Storage Temperature Range | -30℃ to +80℃ |
| Display Mode | 1000:1 |
| Interface | 6800 serial 8-Bit/4-Bit MPU |
| Backlight | LED |
| Display Color Options | Yellow-green, Blue, Gray |
3. Setup and Pin Descriptions
The LCD1602 module features a standard pinout for connection to microcontrollers or other compatible systems. Proper connection of these pins is crucial for correct operation.
| Item | Symbol | Level | Functions |
|---|---|---|---|
| 1 | VDD | +5V | Power Supply For Logic |
| 2 | VSS | 0V | Power Ground |
| 3 | V0 | — | Contrast adjust |
| 4 | RS | H/L | H:data L:command |
| 5 | R/W | H/L | H:read L:write |
| 6 | E | H.H→L | Enable signal |
| 7-14 | DB0-DB7 | H/L | Data Bus |
For detailed wiring diagrams and programming examples, please refer to the technical documentation provided by the manufacturer or common online resources for LCD1602 modules.
4. Operating Instructions
The LCD1602 module is typically controlled by a microcontroller (e.g., Arduino, Raspberry Pi). Basic operation involves:
- Power Connection: Connect VDD to +5V (or 3.3V if using a 3.3V compatible version) and VSS to Ground.
- Contrast Adjustment: Connect a potentiometer to the V0 pin to adjust the display contrast.
- Data and Control Lines: Connect RS, R/W, E, and DB0-DB7 (for 8-bit mode) or DB4-DB7 (for 4-bit mode) to the appropriate digital pins on your microcontroller.
- Programming: Use a suitable library (e.g., LiquidCrystal library for Arduino) to initialize the LCD and send commands for displaying characters, clearing the screen, and controlling the cursor.
Ensure all connections are secure before applying power. Incorrect wiring can damage the module or the controlling device.
5. Maintenance
- Cleaning: Use a soft, dry cloth to gently clean the display surface. Avoid abrasive materials or harsh chemicals.
- Storage: Store the module in a cool, dry environment, away from direct sunlight and extreme temperatures, to prevent damage to the LCD and electronic components.
- Handling: Handle the module by its edges to avoid touching the display area or the electronic components on the back. Static electricity can damage sensitive components.
- Environmental Conditions: Operate the module within the specified operating temperature range (-20℃ to +70℃) and avoid high humidity.
6. Troubleshooting
- No Display/Blank Screen:
- Check power connections (VDD, VSS).
- Adjust the contrast potentiometer (V0 pin). A common issue is the contrast being set too high or too low, making characters invisible.
- Verify backlight connections if applicable.
- Garbled Characters:
- Ensure data and control lines (RS, R/W, E, DB0-DB7) are correctly wired.
- Check your programming code for correct initialization and data transmission sequences.
- Confirm the correct font option (JT for English/Japanese or CT for English/Russian) was selected if font-specific issues arise.
- Module Not Responding:
- Verify the operating voltage is within the specified range (5V/3.3V).
- Ensure the microcontroller is correctly powered and programmed.
- If you are unfamiliar with LCD repair or replacement, it is recommended to contact technical support.
7. User Tips
- Font Selection: Be aware that "JT" versions typically come with English and Japanese fonts, while "CT" versions include English and Russian fonts. Choose the appropriate version based on your project's language requirements.
- Technical Support: If you encounter complex issues or require detailed development data and technical support, do not hesitate to contact the manufacturer or seller.
8. Warranty and Support
The simair LCD1602 module comes with a 1-year product warranty. Lifetime technical support service is also provided. For any inquiries or assistance, please contact simair Official Store customer service.
