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MCP23018-E/SP
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MCP23018-E/SP

Product Overview

Category

The MCP23018-E/SP belongs to the category of integrated circuits (ICs) specifically designed for input/output (I/O) expansion.

Use

This product is commonly used to expand the number of I/O pins available on a microcontroller or microprocessor. It provides an easy and efficient way to increase the number of digital inputs and outputs in various electronic applications.

Characteristics

  • 16-bit remote bidirectional I/O port
  • High-speed I2C interface (up to 1.7 MHz)
  • Three hardware address pins for up to eight devices on the bus
  • Interrupt output pin for efficient event notification
  • Low standby current consumption (less than 1 µA)

Package

The MCP23018-E/SP is available in a small outline package (SOIC) with a wide operating temperature range (-40°C to +85°C). This package ensures ease of integration into various electronic systems.

Essence

The essence of the MCP23018-E/SP lies in its ability to provide additional I/O pins, enabling greater flexibility and functionality in electronic designs.

Packaging/Quantity

This product is typically sold in reels or tubes, containing a specified quantity of MCP23018-E/SP ICs. The exact quantity may vary depending on the supplier.

Specifications

  • Supply Voltage: 1.8V to 5.5V
  • Maximum I/O Pins: 16
  • Operating Temperature Range: -40°C to +85°C
  • I2C Bus Frequency: Up to 1.7 MHz
  • Standby Current: Less than 1 µA

Detailed Pin Configuration

The MCP23018-E/SP features a total of 28 pins, each serving a specific purpose. The detailed pin configuration is as follows:

  1. GPA0 - General Purpose I/O Pin A0
  2. GPA1 - General Purpose I/O Pin A1
  3. GPA2 - General Purpose I/O Pin A2
  4. GPA3 - General Purpose I/O Pin A3
  5. GPA4 - General Purpose I/O Pin A4
  6. GPA5 - General Purpose I/O Pin A5
  7. GPA6 - General Purpose I/O Pin A6
  8. GPA7 - General Purpose I/O Pin A7
  9. GPB0 - General Purpose I/O Pin B0
  10. GPB1 - General Purpose I/O Pin B1
  11. GPB2 - General Purpose I/O Pin B2
  12. GPB3 - General Purpose I/O Pin B3
  13. GPB4 - General Purpose I/O Pin B4
  14. GPB5 - General Purpose I/O Pin B5
  15. GPB6 - General Purpose I/O Pin B6
  16. GPB7 - General Purpose I/O Pin B7
  17. INTA - Interrupt Output Pin A
  18. INTB - Interrupt Output Pin B
  19. A0 - Hardware Address Pin 0
  20. A1 - Hardware Address Pin 1
  21. A2 - Hardware Address Pin 2
  22. VSS - Ground
  23. SDA - Serial Data Line
  24. SCL - Serial Clock Line
  25. RESET - Reset Input
  26. VDD - Supply Voltage
  27. NC - No Connection
  28. NC - No Connection

Functional Features

The MCP23018-E/SP offers several functional features that enhance its usability and versatility:

  • Bidirectional I/O: Each pin can be individually configured as an input or output, allowing for flexible data transfer.
  • Interrupt Capability: The interrupt output pins (INTA and INTB) provide efficient event notification, reducing the need for continuous polling.
  • I2C Interface: The high-speed I2C interface enables seamless communication with microcontrollers or microprocessors, simplifying integration into existing systems.
  • Hardware Addressing: The three hardware address pins (A0, A1, and A2) allow up to eight MCP23018-E/SP devices to coexist on the same I2C bus.

Advantages and Disadvantages

Advantages

  • Provides additional I/O pins, expanding the capabilities of microcontrollers or microprocessors.
  • Low standby current consumption ensures energy efficiency in battery-powered applications.
  • Interrupt capability reduces the need for constant polling, improving overall system performance.
  • Wide operating temperature range allows for use in various environmental conditions.

Disadvantages

  • Limited to 16 I/O pins, which may not be sufficient for complex applications requiring a large number of inputs and outputs.
  • Requires an I2C bus for communication, which may add complexity to the system design.

Working Principles

The MCP23018-E/SP operates based on the I2C protocol, which facilitates communication between the device and the microcontroller or microprocessor. By

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng MCP23018-E/SP sa mga teknikal na solusyon

  1. Question: What is the MCP23018-E/SP?
    Answer: The MCP23018-E/SP is a 16-bit I/O expander with serial interface.

  2. Question: What is the supply voltage range for MCP23018-E/SP?
    Answer: The supply voltage range for MCP23018-E/SP is 1.8V to 5.5V.

  3. Question: How many I/O pins does MCP23018-E/SP have?
    Answer: MCP23018-E/SP has 16 I/O pins.

  4. Question: What is the maximum frequency for the I2C bus on MCP23018-E/SP?
    Answer: The maximum frequency for the I2C bus on MCP23018-E/SP is 1.7 MHz.

  5. Question: Can MCP23018-E/SP be used for both input and output operations?
    Answer: Yes, MCP23018-E/SP can be configured for both input and output operations on its I/O pins.

  6. Question: What is the typical quiescent current for MCP23018-E/SP?
    Answer: The typical quiescent current for MCP23018-E/SP is 1 µA.

  7. Question: Is MCP23018-E/SP compatible with 5V microcontrollers?
    Answer: Yes, MCP23018-E/SP is compatible with 5V microcontrollers.

  8. Question: Can MCP23018-E/SP be cascaded to expand the number of I/O pins?
    Answer: Yes, multiple MCP23018-E/SP devices can be cascaded to expand the number of I/O pins in a system.

  9. Question: What are the interrupt capabilities of MCP23018-E/SP?
    Answer: MCP23018-E/SP supports hardware interrupt output pins that can be configured to signal when an input state changes.

  10. Question: Are there any application examples for using MCP23018-E/SP?
    Answer: Yes, MCP23018-E/SP can be used in applications such as keypads, LED drivers, and interfacing with various sensors.