MCP23017 (7)
MICROCHIPMCP23017 is available from Microchip at Xecor. Designed for general-purpose parallel I/O expansion in I2C or SPI applications, the MCP23017 offers 16-bit input/output port expansion with interrupt output, 25mA sink/source capability per I/O, and support for 100kHz, 400kHz, and 1.7MHz I2C™ compatible modes. Available in multiple package options, it is ideal for applications requiring I/O expansion in industries such as industrial automation, consumer electronics, and telecommunications. Whether used in smart home devices, industrial control systems, or embedded systems, this series ensures scalability, flexibility, and efficiency for demanding applications. Xecor is an authorized distributor for Microchip. Please view our extensive selection of the MCP23017 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MCP23017-E/SO | I2C Interface 1700kHz 5.5V 28-Pin SOIC W Tube | SOIC-28 | 4,272 | |
| MCP23017T-E/SO | Serial Interface MCP23017T-E/SO, 16-Bit I2C I/O Expander | SOIC-28 | 7,708 | |
| MCP23017T-E/ML | Comes in a Tape and Reel packaging option for convenience | QFN-28 | 6,229 | |
| MCP23017-E/ML | QFN-28-EP(6x6) package | QFN-28 | 3,281 | |
| MCP23017-E/SS | Small SSOP-20 package suitable for various applications | SSOP-28 | 7,641 | |
| MCP23017T-E/SS | Easily add additional I/O functionality with the MCP23017T-E/SS 16-Bit Expander." | SSOP-28 | 6,555 | |
| MCP23017-E/SP | I2C Controlled 16-bit Expander | SPDIP-28 | 6,678 |
Key Featrues
16-Bit I/O Expansion with Interrupt Output: The MCP23017/MCP23S17 provides 16-bit parallel I/O expansion, enabling efficient control of multiple devices with minimal GPIO pins. The interrupt output feature reduces the need for continuous polling, improving system efficiency and responsiveness in applications like sensor monitoring or control systems.
Cascadable for Up to 8 Devices on One Bus: The device supports cascading, allowing up to 8 devices to be connected on a single I2C or SPI bus. This scalability is ideal for applications requiring extensive I/O expansion, such as industrial automation or multi-device control systems, while maintaining a compact and efficient design.
25mA Sink/Source Capability per I/O: With a high current drive capability of 25mA per I/O pin, the device can directly drive LEDs, relays, or other peripherals without additional drivers. This enhances performance and simplifies circuit design in applications like lighting control or motor driving.
Supports Multiple I2C and SPI Speeds: The device supports I2C speeds of 100kHz, 400kHz, and 1.7MHz, as well as SPI communication. This flexibility ensures compatibility with a wide range of microcontrollers and systems, optimizing performance for both low-speed and high-speed applications.
Configurable Interrupt Conditions: The device allows interrupts to be triggered based on input state changes or deviations from predefined values. This feature enhances system efficiency by enabling precise event detection and reducing unnecessary processing, making it suitable for real-time monitoring and control applications.
Cascadable for Up to 8 Devices on One Bus: The device supports cascading, allowing up to 8 devices to be connected on a single I2C or SPI bus. This scalability is ideal for applications requiring extensive I/O expansion, such as industrial automation or multi-device control systems, while maintaining a compact and efficient design.
25mA Sink/Source Capability per I/O: With a high current drive capability of 25mA per I/O pin, the device can directly drive LEDs, relays, or other peripherals without additional drivers. This enhances performance and simplifies circuit design in applications like lighting control or motor driving.
Supports Multiple I2C and SPI Speeds: The device supports I2C speeds of 100kHz, 400kHz, and 1.7MHz, as well as SPI communication. This flexibility ensures compatibility with a wide range of microcontrollers and systems, optimizing performance for both low-speed and high-speed applications.
Configurable Interrupt Conditions: The device allows interrupts to be triggered based on input state changes or deviations from predefined values. This feature enhances system efficiency by enabling precise event detection and reducing unnecessary processing, making it suitable for real-time monitoring and control applications.
Applications
I/O Expansion for Embedded Systems: The MCP23017 is ideal for expanding the I/O capabilities of microcontrollers in embedded systems. Its 16-bit I/O port can be configured as inputs or outputs, making it suitable for interfacing with buttons, LEDs, relays, and other peripherals. The I2C interface allows easy integration with minimal wiring, making it perfect for space-constrained applications like IoT devices, robotics, and home automation systems.
Industrial Control Panels: The MCP23017 can be used to manage multiple input and output signals in industrial control panels. Its interrupt functionality allows real-time monitoring of input changes, such as sensor triggers or button presses, while its 25mA sink/source capability per I/O ensures reliable operation with industrial-grade components. This makes it suitable for applications like PLCs (Programmable Logic Controllers) and factory automation systems.
LED Matrix Control: The MCP23017 is well-suited for controlling LED matrices in display applications. Its 16-bit I/O port can drive rows or columns of LEDs, while the I2C interface simplifies communication with the main controller. The device's cascading capability allows for larger displays by connecting multiple MCP23017 devices, making it ideal for scoreboards, signage, and decorative lighting systems.
Keyboard and Keypad Interfaces: The MCP23017 can be used to interface with keyboards or keypads in consumer electronics and industrial equipment. Its interrupt feature allows efficient detection of key presses, reducing the need for continuous polling. The device's ability to invert input polarity simplifies the design of matrix-based keypads, making it suitable for applications like point-of-sale terminals, security systems, and control panels.
Industrial Control Panels: The MCP23017 can be used to manage multiple input and output signals in industrial control panels. Its interrupt functionality allows real-time monitoring of input changes, such as sensor triggers or button presses, while its 25mA sink/source capability per I/O ensures reliable operation with industrial-grade components. This makes it suitable for applications like PLCs (Programmable Logic Controllers) and factory automation systems.
LED Matrix Control: The MCP23017 is well-suited for controlling LED matrices in display applications. Its 16-bit I/O port can drive rows or columns of LEDs, while the I2C interface simplifies communication with the main controller. The device's cascading capability allows for larger displays by connecting multiple MCP23017 devices, making it ideal for scoreboards, signage, and decorative lighting systems.
Keyboard and Keypad Interfaces: The MCP23017 can be used to interface with keyboards or keypads in consumer electronics and industrial equipment. Its interrupt feature allows efficient detection of key presses, reducing the need for continuous polling. The device's ability to invert input polarity simplifies the design of matrix-based keypads, making it suitable for applications like point-of-sale terminals, security systems, and control panels.
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