Boardoza TCA6408A I²C 16x2 LCD Driver Breakout Board
The B-TCA6408A-LCD-BRK is a compact and efficient breakout board designed to simplify LCD interfacing while saving valuable microcontroller pins. Powered by the TCA6408A I²C I/O Expander, this module allows you to control standard HD44780-compatible 16x2 LCD displays using only two I²C lines (SDA & SCL). The board features neatly routed connections for RS, E, and D4–D7 data lines, along with a built-in contrast adjustment potentiometer and onboard status LEDs for quick diagnostics. With integrated decoupling capacitors for stable operation and user-friendly header pins for easy integration, this breakout board is perfect for makers, engineers, and students who want to add an LCD interface to their projects with minimal wiring and maximum efficiency.
Key Features
- Based on TCA6408A I²C I/O Expander – control LCDs with just two I²C lines
- Compatible with HD44780 standard 16x2 LCD displays
- Onboard contrast adjustment potentiometer (VO) for flexible display tuning
- Integrated status LEDs and decoupling capacitors for stable operation
- 400-kHz Fast I2C bus
- Input and output configuration register
- Polarity inversion register
- Power up with all channels configured as inputs
- Noise filter on SCL and SDA inputs
- Low standby current consumption of 1 μA
Technical Specifications
- Item
- B-TCA6408A-BRK
- Input Voltage
- 1.65 V to 5.5 V
- Functions
- standard 16x2 LCD displays driver
- Output Current
- 10 mA (High-level output) / 25 mA (Low-level output current)
- Operating Temperature
- -40/+85 °C
- Board Dimensions
- 60x20mm
Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.