Description
The LCD 2004A 20×4 Alphanumeric Display with Blue Backlight is a reliable character LCD module designed for displaying text, numbers, symbols, and simple custom characters in electronic and embedded projects. With its 20-character × 4-line format, the display can show up to 80 characters at the same time, making it a practical choice for projects that require more information than a standard 16×2 LCD.
The module uses a 5×8 dot matrix character format and supports both 4-bit and 8-bit parallel data communication, giving developers flexibility when connecting it to microcontrollers and development boards.
Its clear blue backlight provides good visibility and makes the display suitable for control panels, digital meters, monitoring systems, Arduino projects, and other DIY electronics applications.
Key Features
- 20 characters × 4 lines display format
- Displays up to 80 characters simultaneously
- Blue STN LCD with blue backlight
- Supports text, numbers, symbols, and custom characters
- 5×8 dot matrix character format
- Supports 4-bit and 8-bit parallel interfaces
- Built-in HD44780-compatible controller
- Compatible with Arduino, ATmega, PIC, Raspberry Pi, and other microcontrollers
- Low power consumption
- Simple interfacing and programming
- Suitable for DIY and embedded electronics projects
Technical Specifications
| Specification | Details |
|---|---|
| Display Format | 20 × 4 Characters |
| LCD Type | STN-Blue |
| Backlight Color | Blue |
| Voltage | 5.0V |
| Interface | Parallel |
| Data Mode | 4-bit / 8-bit |
| Controller IC | ST7066U / S6A0069 or equivalent |
| Dot Matrix | 5 × 8 Dots |
| Character Pitch | 3.55 × 5.35 mm |
| Character Size | 2.95 × 4.75 mm |
| Viewing Area | Approx. 77 × 25.2 mm |
| Module Dimensions | Approx. 98 × 60 × 13.6 mm |
| Driving Method | 1/16 Duty |
| Operating Temperature | -20°C to 70°C |
| Cursor | Supported |
Easy to Use with Arduino and Microcontrollers
The LCD 2004A 20×4 display is widely used with popular microcontrollers and development boards. Its straightforward parallel interface makes it easy to connect and control using Arduino and other compatible platforms.
You can use the display to show sensor readings, temperature, humidity, voltage, menu options, device status, counters, messages, and other project information.
For applications where more information needs to be displayed at once, the 20×4 format provides twice the number of lines compared with a typical 20×2 LCD.
Wide Range of Applications
The LCD 2004A can be used in a variety of electronics and embedded projects, including:
- Arduino projects
- Raspberry Pi projects
- Digital meters
- Temperature and humidity displays
- Sensor monitoring systems
- Industrial control panels
- Electronic instruments
- DIY electronics projects
- Automation systems
- Embedded systems
- Data monitoring
- Counters and timers
- Menu-based interfaces
- Robotics projects
Reviews
There are no reviews yet.