MCP23017: Versatile I2C Port Expander for Electronics Projects

  • The MCP23017 allows expansion up to 16 I/O pins via the I2C interface.
  • Provides flexible interrupt and polarity register configurations.
  • Compatible with Arduino, Raspberry Pi and other embedded systems.
  • Low power consumption, ideal for efficient applications.

mcp23017

El MCP23017 is a port expander 16-bit I2C serial module that uses an IXNUMXC serial interface to facilitate the connection of multiple peripheral devices. This component is widely used in electronics projects, especially with platforms such as Arduino and Raspberry Pi, thanks to its versatility and expandability.

If you're looking to optimize your system by integrating more input and output pins without having to change all your hardware, the MCP23017 is the ideal solution. Through its I2C interface, you can use a single bus to add multiple MCP23017s and expand the available ports without any complications.

Technical characteristics of the MCP23017

  • High speed I2C interface: Supports frequencies of 100kHz, 400kHz or up to 1.7MHz, facilitating fast communication with the microcontroller.
  • Configurable interrupt outputs: The interrupt output pins can be configured as Active-High, Active-Low, or Open-Drain, providing flexibility in signal configuration.
  • Low energy consumption: The MCP23017 has a quiescent current consumption of only 1µA, ideal for applications requiring power efficiency.
  • flexible configuration: Allows the polarity of input port data to be reversed using a polarity reversal register, as well as having an external reset input.
  • High sinking current capacity: It can handle up to 20mA current per input/output pin, making it suitable for handling stronger signals.
  • Operating voltage: It operates on a voltage range from 2.7V to 5.5V, making it compatible with various power supplies.

Applications of MCP23017

The MCP23017 is popular in various types of electronic projects and industrial applications. Its ability to expand the I/O pins makes it ideal for:

  • Projects with Arduino y Raspberry Pi, where it is necessary to extend the available I/O ports without having to modify the basic configuration.
  • Task automation in embedded systems.
  • Interconnection of several peripheral devices on a single communication bus.

In addition, the availability of the MCP23017 in specialized stores such as DigiKey, Farnell, Mouser and Kubii, as well as its complete documentation on the official Microchip website, makes it easy to acquire and access detailed technical information. In many of these stores, users can find additional details on costs, shipping times and useful information to make more informed purchases.

The MCP23017 also stands out for its wide compatibility and technical support. Companies such as AZDelivery offer comprehensive guides and application examples, ensuring that both beginners and advanced users can take full advantage of its features. This company, for example, also includes tutorials and libraries that facilitate its use in practical projects.

The main advantage of this component is its ability to solve connectivity problems without increasing the number of physical pins on a motherboard. This allows for optimizing both space and performance in high-demand projects. While its setup may require learning about the I2C interface, the effort is worth it in terms of system efficiency and versatility.


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