MCP2221T-I/ML

Product Overview

Category

The MCP2221T-I/ML 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 (12 Mbps)
• I2C master/slave functionality
• UART baud rates up to 3 Mbps
• Small form factor package
• Low power consumption
• Integrated EEPROM for storing custom configurations

Package

The MCP2221T-I/ML is available in a small form factor package, specifically ML (QFN-20).

Essence

The essence of this product lies in its ability to provide seamless communication between USB and I2C/UART interfaces, simplifying the integration of USB connectivity into electronic devices.

Packaging/Quantity

The MCP2221T-I/ML is typically packaged in reels, with 2500 units per reel.

Specifications

• USB Compliance: USB 2.0
• I2C Speed Modes: Standard mode (100 kHz), Fast mode (400 kHz), Fast mode plus (1 MHz)
• UART Baud Rates: Up to 3 Mbps
• Operating Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• GPIO Pins: 9 general-purpose I/O pins
• EEPROM Size: 256 bytes

Detailed Pin Configuration

The MCP2221T-I/ML features a total of 20 pins, which are assigned specific functions as follows:

1. VDD - Power supply voltage input
2. VSS - Ground
3. GP0 - General-purpose I/O pin 0
4. GP1 - General-purpose I/O pin 1
5. GP2 - General-purpose I/O pin 2
6. GP3 - General-purpose I/O pin 3
7. GP4 - General-purpose I/O pin 4
8. GP5 - General-purpose I/O pin 5
9. GP6 - General-purpose I/O pin 6
10. GP7 - General-purpose I/O pin 7
11. SCL - I2C clock input/output
12. SDA - I2C data input/output
13. TX - UART transmit output
14. RX - UART receive input
15. RTS - UART request-to-send output
16. CTS - UART clear-to-send input
17. USBDM - USB differential data minus
18. USBDP - USB differential data plus
19. USBID - USB ID pin
20. USBVCC - USB power supply voltage input

Functional Features

The MCP2221T-I/ML offers the following functional features:

• USB-to-UART and USB-to-I2C bridging
• I2C master/slave functionality
• UART communication at high baud rates
• GPIO pins for general-purpose input/output operations
• Integrated EEPROM for storing custom configurations
• USB 2.0 compliance for reliable and fast data transfer

Advantages and Disadvantages

Advantages

• Easy integration of USB connectivity into electronic devices
• Small form factor package for space-constrained designs
• Support for high-speed UART communication
• Versatile GPIO pins for flexible interfacing
• Low power consumption for energy-efficient operation

Disadvantages

• Limited EEPROM size (256 bytes)
• Requires additional components for complete system implementation

Working Principles

The MCP2221T-I/ML operates by converting USB signals to UART or I2C protocols, allowing seamless communication between a USB host and the target device. It utilizes internal circuitry to handle USB data transfer, UART baud rate generation, and I2C bus control. The integrated EEPROM stores custom configurations, enabling customization of the device's behavior.

Detailed Application Field Plans

The MCP2221T-I/ML finds applications in various fields, including but not limited to:

1. Industrial automation: Integration of USB connectivity into industrial equipment for data logging, configuration, and control.
2. Consumer electronics: Enabling USB communication with devices such as smart home appliances, gaming peripherals, and audio equipment.
3. Internet of Things (IoT): Bridging USB and I2C interfaces in IoT devices for sensor data acquisition and control.
4. Embedded systems: Facilitating USB-based programming and debugging in microcontroller-based systems.
5. Medical devices: Enabling USB connectivity for data transfer and control in medical equipment.

Detailed and Complete Alternative Models

1. MCP2221A-I/P - Similar to MCP2221T-I/ML, but available in PDIP package.
2. MCP2221