MCP2221AT-I/ST

Product Overview

• Category: Integrated Circuit
• Use: USB-to-UART/I2C Protocol Converter
• Characteristics:
  • Small form factor
  • Low power consumption
  • High-speed data transfer
  • Easy integration with existing systems
• Package: TSSOP-14
• Essence: USB communication interface for UART and I2C protocols
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 3.3V
• Communication Interface: USB 2.0 Full-Speed
• Supported Protocols: UART, I2C
• Maximum Baud Rate: 3 Mbps
• GPIO Pins: 8
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MCP2221AT-I/ST has a total of 14 pins in the TSSOP package. The pin configuration is as follows:

1. VDD - Power supply voltage
2. GP0 - General-purpose I/O pin 0
3. GP1 - General-purpose I/O pin 1
4. GP2 - General-purpose I/O pin 2
5. GP3 - General-purpose I/O pin 3
6. SCL - I2C clock input/output
7. SDA - I2C data input/output
8. RST - Reset pin
9. TXD - UART transmit data
10. RXD - UART receive data
11. CTS - UART clear to send
12. RTS - UART request to send
13. GND - Ground
14. VSS - Ground

Functional Features

• USB-to-UART Conversion: Allows communication between a computer and UART devices via USB.
• USB-to-I2C Conversion: Enables communication between a computer and I2C devices via USB.
• GPIO Pins: Provides 8 general-purpose I/O pins for additional functionality.
• Integrated EEPROM: Stores configuration settings and device information.

Advantages

• Small form factor allows for easy integration into space-constrained designs.
• Low power consumption makes it suitable for battery-powered applications.
• High-speed data transfer ensures efficient communication between devices.
• Supports both UART and I2C protocols, providing versatility in various applications.
• Easy integration with existing systems due to USB interface.

Disadvantages

• Limited number of GPIO pins may restrict the complexity of connected devices.
• Requires external components for voltage level translation in certain applications.

Working Principles

The MCP2221AT-I/ST acts as a bridge between a computer's USB port and UART/I2C devices. It converts USB signals into UART or I2C protocols, allowing communication with compatible devices. The integrated EEPROM stores configuration settings and device information, ensuring seamless operation.

Application Field Plans

The MCP2221AT-I/ST finds applications in various fields, including:

1. Industrial Automation: Used for connecting sensors, actuators, and other devices to a computer for control and monitoring purposes.
2. Consumer Electronics: Enables communication between computers and peripherals such as displays, touchscreens, and sensors.
3. Internet of Things (IoT): Facilitates connectivity between IoT devices and computers, enabling data exchange and control.
4. Embedded Systems: Integrates USB communication capabilities into embedded systems, enhancing their functionality.

Alternative Models

1. MCP2221A-I/P: DIP package variant of the MCP2221AT-I/ST.
2. MCP2200-I/SO: USB-to-UART converter with similar features but different pin configuration.
3. FT232RQ: USB-to-UART converter with enhanced features and higher data transfer rates.

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