I2C/IIC Serial Interface Board Module for 1602/2004 LCD

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The PCF8574T module is a versatile I/O expander module designed to simplify the interfacing of 16x2 (1602) or 20x4 (2004) character LCD displays with microcontrollers. This module utilizes the PCF8574T I/O expander IC to provide additional digital I/O pins for controlling the LCD display using the I2C communication protocol. By utilizing this module, you can significantly reduce the number of pins required to interface with the LCD, making it an ideal choice for projects with limited available GPIO pins.

Specificatoins of I2C/IIC Serial Interface Board Module for 1602/2004 LCD:

  • I/O Expander IC: PCF8574T
  • I2C Interface: Provides I2C communication protocol for interfacing with microcontrollers
  • Digital I/O Pins: Expands the available digital I/O pins for controlling LCD displays
  • Compatibility: Designed for 16x2 (1602) and 20x4 (2004) character LCD displays
  • Voltage Level: Typically compatible with 3.3V and 5V microcontrollers
  • Operating Voltage: Typically 5V (may vary based on specific module variant)
  • Dimensions: 41.5mm (length) * 19mm (width) * 15.3mm (H)
  • Weight: 5g
  • PCB Color: Black
  • Supply voltage: 2.5-6V

Features of I2C/IIC Serial Interface Board Module for 1602/2004 LCD:

  • I2C Interface: The PCF8574T module uses the I2C protocol for communication, allowing for efficient control of the LCD display with fewer wires.
  • Reduced Pin Usage: By utilizing the I/O expander, the module reduces the number of digital pins required for controlling the LCD display.
  • Compatibility: Designed to work with both 16x2 (1602) and 20x4 (2004) character LCD displays, offering versatility for various projects.
  • Usage Tip:
  • Install appropriate libraries for the PCF8574T module and LCD display in your microcontroller's programming environment. Follow the manufacturer's guidelines to configure the I2C address of the PCF8574T module if necessary.
  • The power control with backlight can be set via jumpers backlight power supply is connected. Plug jumper to connect the backlight, then unplug the jumper is off backlight power supply
  • The contrast can be adjusted by turning the blue potentiometer clockwise enhanced counterclockwise weakened. Potentiometer design on the front and the convenience of customers anytime, anywhere free adjustment
  • The module can cascade up to eight cascaded. / A1 / A2 modify the device address via short circuit A0. The default address is 0x27 or 0x3F(new series)
  • Caution:
  • Ensure that the I2C voltage levels are compatible with your microcontroller (3.3V or 5V) to avoid potential damage. Carefully connect the module to the LCD and microcontroller to prevent improper connections. Handle the module gently to prevent damage to pin headers and components.
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