The I/O extended module provides a simple and efficient solution for expanding your microcontroller's I/O capabilities using the I2C interface. With this module, users can control and manage up to 8 bidirectional I/O lines per module. Its cascading feature allows for the connection of up to 8 modules simultaneously, enabling the expansion of up to 64 I/O lines. This makes it ideal for projects requiring multiple inputs and outputs without adding complexity to the microcontroller's design.

The module is compatible with both 3.3V and 5V systems, ensuring flexibility and broad compatibility with various microcontrollers, including Arduino, Raspberry Pi, and others. Additionally, its interrupt output capability provides efficient event handling for real-time applications.

Features

1. Efficient I/O Expansion
   Each module supports 8 bidirectional I/O lines, offering flexible control of inputs and outputs. The loop-thru feature enables cascading up to 8 modules, extending the system to 64 I/O lines while using a single I2C bus.
2. I2C Communication
   Operates on a reliable I2C interface, with adjustable addresses via jumpers. This simplifies wiring and allows multiple modules to coexist on the same I2C bus.
3. Interrupt Output Capability
   The module provides an interrupt output feature, allowing the microcontroller to respond efficiently to changes or events without continuously polling the inputs.
4. Wide Voltage Compatibility
   Supports both 3.3V and 5V systems, ensuring seamless integration with a variety of microcontrollers and other digital circuits.

Specifications:

• Data Lines: 8 bidirectional I/O lines per module
• Expandable: Supports cascading of up to 8 modules for 64 total I/O lines
• Interface: I2C with jumper-adjustable addresses
• Interrupt Output: Provided for efficient event-driven applications
• Voltage Compatibility: Works with 3.3V and 5V systems

Applications

• Expanding I/O capabilities for microcontrollers with limited pins
• Home automation systems requiring multiple sensors or actuators
• Robotics projects with numerous inputs (e.g., switches, sensors) and outputs (e.g., motors, LEDs)
• Industrial automation with scalable control requirements
• Prototyping and testing environments needing flexible I/O expansion

Pinout:

Package includes:

1 x Expansion I/o Board Pcf8574 Support Module