MCP23017T-E/SO

The MCP23017T-E/SO is a 16-bit I/O expander with I2C interface, providing additional GPIO pins for microcontrollers with limited pin availability. It offers a simple solution for expanding the I/O capabilities of devices, making it ideal for various embedded system applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• A0-A2: Address Select Pins
• SCL: I2C Clock Input
• SDA: I2C Data Input/Output
• INTA: Interrupt Output for Port A
• INTB: Interrupt Output for Port B
• GND: Ground
• VDD: Power Supply

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the MCP23017T-E/SO for a visual representation.

Key Features

• 16-Bit I/O Expander: Provides 16 additional I/O pins for expanding the capabilities of microcontrollers.
• I2C Interface: Communication via the I2C interface for easy integration with various microcontroller platforms.
• Interrupt Output: INTA and INTB pins for triggering interrupts based on I/O status changes.
• High-Speed I2C: Supports high-speed I2C communication for quick data transfer between devices.
• Low Standby Current: Features low standby current consumption, making it energy-efficient for battery-powered applications.

Note: For detailed technical specifications, please refer to the MCP23017T-E/SO datasheet.

Application

• Embedded Systems: Suitable for expanding I/O capabilities in embedded systems and IoT devices.
• Hobbyist Projects: Ideal for hobbyist projects requiring additional GPIO pins for interfacing sensors, displays, and more.
• Industrial Automation: Used in industrial automation applications for controlling and monitoring various devices.

Functionality

The MCP23017T-E/SO serves as a convenient solution for increasing the number of available I/O pins in microcontroller projects, enhancing the flexibility and functionality of embedded systems.

Usage Guide

• Address Selection: Set the address pins (A0-A2) to configure the device address and avoid conflicts in I2C communication.
• I2C Communication: Connect SCL and SDA pins to the corresponding I2C lines of the microcontroller for data exchange.
• Interrupt Handling: Utilize INTA and INTB pins to receive interrupt signals based on changes in the I/O status.

Frequently Asked Questions

Q: How many additional I/O pins does the MCP23017T-E/SO provide?
A: The MCP23017T-E/SO offers 16 additional I/O pins for expanding the connectivity of microcontrollers.

Q: Is the MCP23017T-E/SO compatible with 5V microcontrollers?
A: Yes, the MCP23017T-E/SO supports both 3.3V and 5V microcontroller systems, offering versatility in various projects.