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MCP2221A-I/ST
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MCP2221A-I/ST

Product Overview

Category

The MCP2221A-I/ST belongs to the category of USB-to-UART/I2C serial converter.

Use

This product is primarily used for bridging communication between a Universal Serial Bus (USB) and an Inter-Integrated Circuit (I2C) or UART interface. It enables easy integration of USB connectivity into various electronic devices.

Characteristics

  • USB 2.0 compliant
  • Supports full-speed USB communication (12 Mbps)
  • Provides I2C master/slave functionality
  • Offers UART communication at various baud rates
  • Supports GPIO (General Purpose Input/Output) pins
  • Programmable device address for I2C communication
  • Small form factor package for space-constrained applications

Package and Quantity

The MCP2221A-I/ST is available in a small surface-mount package (ST) and is typically sold in reels or tubes containing multiple units.

Specifications

  • USB Compliance: USB 2.0
  • Communication Speed: Full-Speed (12 Mbps)
  • I2C Master/Slave: Yes
  • UART Baud Rates: Various options available
  • GPIO Pins: Yes
  • Programmable Device Address: Yes
  • Package Type: Surface Mount (ST)

Pin Configuration

The MCP2221A-I/ST has a total of 20 pins, which are configured as follows:

  1. VDD - Power supply voltage
  2. GND - Ground reference
  3. SCL - Serial Clock line for I2C communication
  4. SDA - Serial Data line for I2C communication
  5. TXD - Transmit Data line for UART communication
  6. RXD - Receive Data line for UART communication
  7. GP0 - General Purpose Input/Output pin 0
  8. GP1 - General Purpose Input/Output pin 1
  9. GP2 - General Purpose Input/Output pin 2
  10. GP3 - General Purpose Input/Output pin 3
  11. GP4 - General Purpose Input/Output pin 4
  12. GP5 - General Purpose Input/Output pin 5
  13. GP6 - General Purpose Input/Output pin 6
  14. GP7 - General Purpose Input/Output pin 7
  15. RESET - Reset pin for the device
  16. VSS - Ground reference
  17. NC - No connection
  18. NC - No connection
  19. NC - No connection
  20. NC - No connection

Functional Features

The MCP2221A-I/ST offers several functional features, including:

  • USB-to-UART/I2C bridging: Enables seamless communication between USB and UART/I2C interfaces.
  • I2C Master/Slave functionality: Allows the device to act as an I2C master or slave, facilitating easy integration into I2C-based systems.
  • UART Communication: Supports UART communication at various baud rates, enabling serial data transfer between devices.
  • GPIO Pins: Provides general-purpose input/output pins for additional functionality and customization.
  • Programmable Device Address: Allows the user to set a specific address for the device when operating in I2C mode.

Advantages and Disadvantages

Advantages

  • Easy integration of USB connectivity into electronic devices
  • Small form factor package suitable for space-constrained applications
  • Supports both I2C and UART communication protocols
  • Programmable device address enhances flexibility in I2C applications

Disadvantages

  • Limited number of GPIO pins available
  • Requires additional components for complete system integration

Working Principles

The MCP2221A-I/ST operates by converting USB signals to either UART or I2C protocols. It acts as a bridge between the USB host and the target device, enabling seamless communication between the two interfaces. The device can be configured to operate as an I2C master or slave, allowing for easy integration into existing I2C systems. Similarly, it supports UART communication at various baud rates, facilitating serial data transfer between devices.

Application Field Plans

The MCP2221A-I/ST finds applications in various fields, including but not limited to:

  1. Industrial Automation: Enables USB connectivity in industrial control systems, allowing for easy monitoring and control.
  2. Consumer Electronics: Facilitates USB-to-UART/I2C communication in consumer electronic devices such as smart home systems, IoT devices, etc.
  3. Embedded Systems: Provides a convenient interface for USB communication in embedded systems, enhancing their functionality and connectivity.
  4. Test and Measurement Equipment: Allows for USB-based communication with test and measurement devices, simplifying data acquisition and analysis.

Alternative Models

For users seeking alternatives to the MCP2221A-I/ST, the following models provide similar functionality:

  1. FT232R - USB-to-UART converter with GPIO pins
  2. CP2110 - USB-to-I2C bridge controller

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng MCP2221A-I/ST sa mga teknikal na solusyon

  1. Question: What is the maximum communication speed supported by MCP2221A-I/ST?
    Answer: The MCP2221A-I/ST supports full-speed USB communication up to 12 Mbps.

  2. Question: Can the MCP2221A-I/ST be used for I2C communication?
    Answer: Yes, the MCP2221A-I/ST can be used as an I2C master or slave device.

  3. Question: What are the voltage levels supported by MCP2221A-I/ST GPIO pins?
    Answer: The GPIO pins of MCP2221A-I/ST support both 3.3V and 5V logic levels.

  4. Question: Is the MCP2221A-I/ST compatible with Windows, Linux, and macOS?
    Answer: Yes, the MCP2221A-I/ST is compatible with Windows, Linux, and macOS operating systems.

  5. Question: Can the MCP2221A-I/ST be used for UART communication?
    Answer: Yes, the MCP2221A-I/ST supports UART communication at various baud rates.

  6. Question: Does the MCP2221A-I/ST require external crystal or oscillator for USB operation?
    Answer: No, the MCP2221A-I/ST has an integrated USB transceiver and does not require an external crystal or oscillator for USB operation.

  7. Question: What are the typical applications of MCP2221A-I/ST in technical solutions?
    Answer: The MCP2221A-I/ST is commonly used for USB-to-UART/I2C/SMBus protocol conversion, USB dongles, and various other USB interface applications.

  8. Question: Can the MCP2221A-I/ST be powered directly from the USB bus?
    Answer: Yes, the MCP2221A-I/ST can be powered directly from the USB bus, eliminating the need for an external power supply.

  9. Question: Are there any development tools or software libraries available for MCP2221A-I/ST?
    Answer: Yes, Microchip provides development tools, software libraries, and example code for integrating MCP2221A-I/ST into various applications.

  10. Question: What is the package type and temperature range of MCP2221A-I/ST?
    Answer: The MCP2221A-I/ST is available in a 20-lead SSOP package and operates over a temperature range of -40°C to +85°C.