Description
The 16×2 LCD Display 1602 Character Display – Blue is a popular alphanumeric display module designed for Arduino and a wide range of microcontroller-based electronics projects. It provides 16 characters per row and 2 rows, allowing you to display up to 32 characters at a time.
The display uses a standard HD44780-compatible controller interface, making it easy to program and compatible with many microcontrollers. It supports both 4-bit and 8-bit parallel communication modes, giving you flexibility depending on the number of available GPIO pins.
Each character is formed using a compact dot matrix, allowing the display to show letters, numbers, symbols, and custom-generated characters. The integrated blue LED backlight with white characters provides good visibility and makes the module suitable for both indoor and embedded applications.
Key Features
- 16×2 character LCD display
- Displays 16 characters per row across 2 rows
- Up to 32 characters displayed at once
- Blue LED backlight with white characters
- HD44780 or equivalent controller
- Supports 4-bit and 8-bit parallel interfaces
- 5×7 dot matrix character format with cursor
- Supports custom-generated characters
- Compatible with Arduino and most microcontrollers
- Low current consumption without backlight
- Simple and widely supported interface
- Ideal for displaying text, numbers, menus, and sensor data
Specifications
| Specification | Details |
|---|---|
| Display Format | 16 × 2 Characters |
| Display Type | STN, Transflective, Positive |
| Character Matrix | 5 × 7 Dots + Cursor |
| Controller | HD44780 or Equivalent |
| Interface | 4-bit / 8-bit Parallel |
| Backlight | LED |
| Backlight Color | Blue |
| Character Color | White |
| Operating Voltage | 4.7V–5.3V |
| Typical Supply Voltage | 5V |
| Current Consumption | Approx. 1mA without backlight |
| Viewing Direction | 6 O’Clock |
| Driving Scheme | 1/16 Duty Cycle, 1/5 Bias |
| Operating Temperature | -20°C to 70°C |
| Storage Temperature | -30°C to 80°C |
| Construction | COB (Chip-on-Board) |
16×2 LCD Pin Configuration
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | VSS | Ground |
| 2 | VDD | +5V Power Supply |
| 3 | VE / V0 | Contrast Adjustment |
| 4 | RS | Register Select |
| 5 | R/W | Read / Write Control |
| 6 | E | Enable |
| 7 | DB0 | Data Bit 0 |
| 8 | DB1 | Data Bit 1 |
| 9 | DB2 | Data Bit 2 |
| 10 | DB3 | Data Bit 3 |
| 11 | DB4 | Data Bit 4 |
| 12 | DB5 | Data Bit 5 |
| 13 | DB6 | Data Bit 6 |
| 14 | DB7 | Data Bit 7 |
| 15 | LED+ | Backlight Positive |
| 16 | LED− | Backlight Negative |
4-Bit and 8-Bit Interface
The 1602 LCD module can operate in either 8-bit or 4-bit communication mode. In 8-bit mode, all eight data lines are used for communication. In 4-bit mode, only DB4–DB7 are required, helping reduce the number of microcontroller GPIO pins needed.
This makes the display particularly useful with Arduino boards where other pins are required for sensors, buttons, motors, or additional modules.
Adjustable Contrast
The V0/VE contrast pin allows the LCD contrast to be adjusted according to the operating conditions. Connecting the contrast pin to a suitable potentiometer provides precise control over character visibility.
Applications
The 16×2 LCD Display 1602 can be used in many electronics projects, including:
- Arduino projects
- Raspberry Pi and microcontroller projects
- Temperature and humidity displays
- Sensor monitoring systems
- Digital clocks and timers
- Counters and measuring devices
- Menu-based interfaces
- Robotics projects
- Home automation systems
- DIY electronics projects
- Embedded control systems
- Educational electronics projects
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