The LCD1602 I2C Display Module is a 16x2 character LCD with an integrated PCF8574 I2C interface, designed for compact text output in microcontroller projects.
It operates at 5 V and displays characters in a 5x8 dot matrix on a blue background with white backlight (or green background with blue backlight, depending on variant).
The I2C interface reduces wiring to four pins—VCC, GND, SDA, and SCL—allowing address configuration via solder jumpers (default 0x27, range 0x20–0x27).
Contrast is adjustable via an on-board 10 kΩ potentiometer.
The module measures 80 mm x 36 mm x 12 mm and uses the HD44780-compatible controller for standard text commands.
Character set supports ASCII and custom symbols, with a viewing area of 64.5 mm x 16 mm. Operating temperature ranges from 0°C to +50°C, and current draw is approximately 2 mA without backlight, up to 40 mA with backlight enabled.
Key Features
- Display: 16 characters x 2 lines, 5x8 dot matrix per character.
- Interface: I2C (PCF8574), 4-wire connection (VCC, GND, SDA, SCL).
- I2C Address: Configurable 0x20–0x27 via solder pads (default 0x27).
- Backlight: White LED (blue screen) or blue LED (green screen), on/off controllable.
- Contrast: Adjustable via on-board potentiometer.
- Voltage: 5 V operating.
- Current: ~2 mA (backlight off), ~40 mA (backlight on).
- Dimensions: 80 x 36 x 12 mm.
Common Applications
- Microcontroller Feedback: Displays sensor data, status, or menus on Arduino, ESP32, or Raspberry Pi.
- Data Logging: Shows real-time values in temperature, humidity, or voltage monitors.
- User Interfaces: Provides text input/output in automation or control panels.
- Educational Projects: Demonstrates I2C communication and LCD control.
- Industrial Monitoring: Integrates into equipment for parameter readouts.
Specifications
- Model: LCD1602 with I2C (PCF8574)
- Type: 16x2 Character LCD
- Controller: HD44780-compatible
- Interface: I2C (4-wire)
- I2C Address: 0x20–0x27 (default 0x27)
- Backlight: LED (white or blue, variant-dependent)
- Screen Color: Blue with white text or green with blue text
- Operating Voltage: 5 V
- Current Draw: ~2 mA (no backlight), ~40 mA (with backlight)
- Viewing Area: 64.5 x 16 mm
- Character Size: 5x8 pixels
- Dimensions: 80 x 36 x 12 mm
- Operating Temperature: 0°C to +50°C
- Contrast Adjustment: On-board potentiometer
- Quantity: 1 piece per pack
Quality Assurance
Pacific Custom Engineering supplies genuine LCD1602 I2C modules, ensuring reliable performance for text display and microcontroller interfacing.