Microchip Technology's MCP23017T-E/SS: A Versatile I/O Expander

The MCP23017T-E/SS is a high-performance, 16-bit I/O expander from Microchip Technology, designed to provide a simple solution for expanding I/O capabilities using the two-wire I²C™compatible serial interface. This integrated circuit (IC) is particularly ideal for applications where I/O pins on a microcontroller are limited and additional inputs or outputs are needed.

Encased in a space-saving 28-SSOP package, the MCP23017T-E/SS operates over a broad voltage range (1.8V to 5.5V), making it suitable for a wide array of applications, from industrial systems to consumer electronics. Its design allows for seamless integration with most microcontrollers, enhancing design flexibility and functionality without a significant increase in footprint.

Key Features

• 16-bit I/O Ports: The device offers 16 individually configurable input/output ports, which can be controlled in a byte-wide or bit-wide fashion.
• High-Speed I²C Interface: With an I²C interface supporting standard (100 kHz), fast (400 kHz), and high-speed (up to 1.7 MHz) modes, the MCP23017T-E/SS ensures compatibility with a broad range of microcontrollers and systems.
• Interrupt Output: It provides an interrupt output pin that can be configured to reflect the interrupt status from any of the input pins, enabling prompt response to input changes without the need to continuously poll the inputs.
• Configurable Polarity: Input polarity inversion is possible, allowing users to adapt the IC to their preferred logic levels easily.
• Multiple Addressing Options: Up to eight MCP23017T-E/SS devices can share the same I²C bus, thanks to three hardware address pins that allow for multiple addressing configurations.
• Extended Temperature Range: The device is operational across an extended temperature range from -40°C to +125°C, ensuring reliability and performance in demanding environments.

Whether you're developing complex industrial control systems, home automation networks, or simply need additional I/Os for your hobbyist project, the MCP23017T-E/SS from Microchip Technology is an excellent choice for expanding your system's capabilities with ease and efficiency.

For detailed specifications, application notes, and additional resources, visit the Microchip Technology website.