20x4 Character LCD STN Transflective - MCU
- 💹 Enjoy a 20% discount for orders over 500
- 📉 A 15% discount is available for orders ranging from 200 to 499
- 🎁 A 10% discount is available for orders ranging from 50 to 199
- 🎁 A 5% discount is available when ordering 10-49
Interested in customizing this product? Get in touch with us.
Order samples, immediate delivery.
Factory bulk lead time: 3 weeks.
20x4 Character LCD STN Transflective - MCU
- 💹 Enjoy a 20% discount for orders over 500
- 📉 A 15% discount is available for orders ranging from 200 to 499
- 🎁 A 10% discount is available for orders ranging from 50 to 199
- 🎁 A 5% discount is available when ordering 10-49
20x4 Character LCD STN Transflective - MCU
The 20x4 Character LCD STN Transflective - MCU is a professional-grade display module designed for embedded systems, featuring a 20-character by 4-line display with STN (Super Twisted Nematic) positive mode, yellow-green transflective technology, and a built-in ST7066U controller for seamless MCU integration. Ideal for low-power applications, it offers a clear view from 6:00 direction and operates on a 5.0V power supply with yellow-green LED backlight.
Engineered with a compact module size of 77.0mm × 47.0mm × 12.4mm and weighing only 37.4g, this LCD module provides high reliability in harsh environments, supporting temperatures from -20°C to +70°C. The transflective design ensures visibility in both reflective and backlit conditions, making it versatile for indoor and outdoor use.
- Controller Integration: Built-in ST7066U driver supports 4-bit or 8-bit MPU interface, reducing external component count and simplifying design.
- Optimal Visibility: Yellow-green display with a contrast ratio of 3:1 and typical response time of 300ms ensures legible text under various lighting.
- Energy Efficient: Low power consumption with supply current of 1.2mA typical and backlight current of 180mA typical, suitable for battery-operated devices.
- Rugged Construction: Designed to withstand vibration and thermal shocks, passed reliability tests including 200 hours at 80°C storage.
Key technical parameters based on official datasheets, ensuring accuracy for integration:
| Parameter | Specification |
|---|---|
| Display Format | 20 characters × 4 lines |
| Display Mode | STN Positive, Yellow Green, Transflective |
| Module Dimensions | 77.0 × 47.0 × 12.4 mm (MAX) |
| Power Supply Voltage | 5.0V (4.5V to 5.5V range) |
| Supply Current (Logic) | 1.0mA min, 1.2mA typ, 1.5mA max |
| Backlight Type | Yellow Green LED |
| Backlight Voltage | 3.9V min, 4.2V typ, 4.4V max |
| Backlight Current | 144mA min, 180mA typ, 216mA max |
| Interface | 6800 Series MPU Interface |
| Controller IC | ST7066U |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Weight | 37.4g |
| View Angles | Top 20°, Bottom 40°, Left 30°, Right 30° |
| Response Time | 300ms typ, 400ms max |
| Contrast Ratio | 3 typ |
| Luminance (Backlight only) | 240 cd/m² typ |
Dimensions diagram for precise mounting:
We offer customized solutions for bulk orders and specific requirements, tailored to industrial and commercial applications:
- Bulk Procurement: Volume discounts for orders above 100 units, with flexible delivery schedules to meet production timelines.
- Customization Options: Modify backlight color, connector types, or firmware settings; white-label packaging available for OEM partners.
- Technical Support: Dedicated engineering support for integration, including schematic review and code examples for ST7066U controller.
This LCD module is widely used in scenarios requiring reliable alphanumeric display with low power consumption:
Monitoring systems for PLCs, sensors, and machinery where 20x4 format shows parameters like temperature, pressure, or status codes in real-time.
Portable diagnostic equipment such as glucometers or patient monitors, leveraging the transflective display for clear reading in various lighting.
Embedded in multimeters, oscilloscopes, or data loggers to display readings, with ST7066U supporting easy MPU communication.
Interface Compatibility: The 6800 MPU interface ensures broad compatibility with microcontrollers like ARM, AVR, and PIC. Supports 4-bit mode to save I/O pins or 8-bit for faster data transfer.
Typical Use Cases:
- Embedded Systems: Integrate with Raspberry Pi or Arduino via level shifters for DIY projects requiring text display.
- Automotive Dashboards: Show fuel levels or diagnostic codes, validated for -20°C to +70°C operation.
- Smart Home Devices: Thermostats or security panels where the yellow-green display reduces eye strain in low light.
Access detailed documentation for development and compliance:
Technical Notes: Ensure power supply stability (4.5V-5.5V) for proper ST7066U initialization. Use the provided initialization sequence from the datasheet to avoid display issues. Compatible with 3.3V or 5V MCUs with appropriate level matching.
Resources: DM-LCD2004-440 Datasheet | DM-LCD2004-441 Datasheet | ST7066U Controller Datasheet
Dimensions
