I2C LCD Module PCF8574 for 16x2 & 20x4 LCD

The I2C LCD Module PCF8574 is a compact interface adapter for compatible 16x2 and 20x4 character LCDs. It uses a PCF8574-series I/O expander to provide I2C communication through SDA and SCL, helping reduce the number of controller I/O connections required for an LCD interface.

Description

The I2C LCD Module PCF8574 for 16x2 & 20x4 LCD provides a convenient way to connect compatible character LCD displays through an I2C interface instead of using multiple controller I/O connections for the LCD's parallel interface.

The module is based on the PCF8574 family of 8-bit I/O expanders for the I2C bus. The current verified Chip.pk stock is fitted with the PCF8574T variant. Using the controller-side SDA and SCL connections, the module simplifies wiring between a compatible character LCD and an I2C-enabled controller.

An onboard 103 trimmer potentiometer provides LCD contrast adjustment. The board also includes A0, A1 and A2 address-selection pads, which can be used for hardware address configuration where required.

This product may also be described as an I2C LCD adapter, LCD I2C module, I2C serial interface adapter or IIC LCD module. I2C is used as the primary terminology in this listing because the Pakistan keyword research showed stronger search demand for I2C-based terms.

The actual Chip.pk stock has been physically tested with 16x2 and 20x4 character LCD modules, confirming compatibility with both tested display formats.

Key Features

• PCF8574-based I2C LCD interface module
• Current verified stock fitted with PCF8574T
• Tested with 16x2 and 20x4 character LCDs
• Provides I2C communication through SDA and SCL
• Helps reduce controller I/O connections required for LCD interfacing
• Onboard 103 trimmer for LCD contrast adjustment
• A0, A1 and A2 address-selection pads
• Clearly marked GND, VCC, SDA and SCL connections
• Compact LCD interface adapter design
• Suitable for microcontroller and embedded display projects
• Not limited to a single development platform

Technical Specifications

Technical Accuracy Note

The current Chip.pk stock supplied for verification uses the PCF8574T IC. PCF8574 is used at family level in the product title to provide a cleaner and more evergreen product identity, while the actual IC variant is disclosed in the technical specifications.

Compatibility with 16x2 and 20x4 LCD modules has been physically tested and confirmed on the actual stock.

Applications

• 16x2 character LCD projects
• 20x4 character LCD projects
• Microcontroller display interfacing
• Embedded systems
• Sensor monitoring displays
• IoT display projects
• Electronics prototyping
• DIY electronics projects
• Educational electronics projects
• Applications requiring reduced LCD interface wiring
• Arduino 16x2 and 20x4 LCD interface projects

Compatibility

The actual Chip.pk stock has been tested with 16x2 and 20x4 character LCD modules.

The controller side uses SDA and SCL for I2C communication. Use with a particular microcontroller or development board depends on its I2C capability, correct wiring and appropriate software configuration.

This I2C LCD module can be used with Arduino boards that support I2C communication, provided the LCD, wiring and software configuration are compatible. It is not limited to Arduino and may also be used with other suitable microcontrollers.

Package Contents

1 × PCF8574 I2C LCD Module

Buy I2C LCD Module in Pakistan

Buy the I2C LCD Module in Pakistan from Chip.pk for compatible 16x2 and 20x4 character LCD projects. The PCF8574-based interface provides SDA/SCL I2C communication, onboard contrast adjustment and configurable address-selection pads for convenient LCD integration.

FAQs

1. What is an I2C LCD module used for?
An I2C LCD module provides an I2C interface for a compatible character LCD, allowing communication through SDA and SCL instead of requiring multiple controller I/O connections for the LCD interface.

2. Is this I2C LCD module compatible with 16x2 LCDs?
Yes. The actual Chip.pk stock has been tested with a 16x2 character LCD and compatibility has been confirmed.

3. Can I use this module with a 20x4 LCD?
Yes. The actual module has also been tested with a 20x4 character LCD.

4. Which IC is used on this I2C LCD module?
The product belongs to the PCF8574-based I2C LCD interface family. The current verified Chip.pk stock is fitted with the PCF8574T variant.

5. Can I use this I2C LCD module with Arduino?
Yes. It can be used with Arduino boards that support I2C communication, provided the LCD, wiring and software configuration are appropriate. The module itself is not limited to Arduino.

6. Does this module reduce the number of pins needed to connect an LCD?
Yes. It allows the controller to communicate with the LCD interface through the SDA and SCL I2C lines, reducing the number of controller I/O connections normally required for a parallel LCD interface.

7. What are SDA and SCL on the module?
SDA is the I2C data line and SCL is the I2C clock line. These connections are used for communication between the module and an I2C-enabled controller.

8. What are the A0, A1 and A2 pads used for?
A0, A1 and A2 are hardware address-selection inputs associated with the PCF8574 device. Their configuration can be used to alter the module's I2C address where required.

9. Can the LCD contrast be adjusted?
Yes. The module includes an onboard 103 trimmer potentiometer for adjusting the connected LCD's contrast.

10. Is IIC the same as I2C for this module?
IIC is another textual abbreviation commonly used for I2C. This listing primarily uses I2C terminology.

11. Is an LCD display included with the module?
No. The package contains the I2C LCD interface module only. The LCD, development board and connecting wires are not included unless explicitly stated on the live product offer.

12. Where can I buy an I2C LCD module in Pakistan?
You can order this I2C LCD module in Pakistan from Chip.pk, subject to current stock availability and pricing shown on the product page.