MCP2221-I/P

Product Overview

Category

The MCP2221-I/P belongs to the category of USB-to-UART/I2C serial converter.

Use

It is primarily used for bridging communication between a Universal Serial Bus (USB) and an Inter-Integrated Circuit (I2C) or UART interface.

Characteristics

• USB-to-UART/I2C bridge
• Supports full-speed USB (12 Mbps)
• I2C bus speeds up to 400 kHz
• UART baud rates from 300 bps to 115.2 kbps
• 8 GPIO pins configurable as digital I/O or I2C/SMBus bit-banged interface
• Small form factor package

Package

The MCP2221-I/P comes in a DIP (Dual Inline Package) format, which allows it to be easily mounted on a printed circuit board (PCB).

Essence

The essence of the MCP2221-I/P lies in its ability to provide seamless communication between USB and I2C/UART interfaces, enabling easy integration of USB functionality into various electronic devices.

Packaging/Quantity

The MCP2221-I/P is typically packaged in tubes or trays, with each tube/tray containing a specific quantity of units. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• USB Compliance: USB 2.0 Full-Speed (12 Mbps)
• I2C Speeds: Up to 400 kHz
• UART Baud Rates: 300 bps to 115.2 kbps
• GPIO Pins: 8 (configurable as digital I/O or I2C/SMBus bit-banged interface)

Detailed Pin Configuration

The MCP2221-I/P has a total of 20 pins, each serving a specific purpose. 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. GP4 - General-purpose I/O pin 4
7. GP5 - General-purpose I/O pin 5
8. GP6 - General-purpose I/O pin 6
9. GP7 - General-purpose I/O pin 7
10. GND - Ground
11. SCL - I2C clock line
12. SDA - I2C data line
13. TX - UART transmit pin
14. RX - UART receive pin
15. RTS - UART request-to-send pin
16. CTS - UART clear-to-send pin
17. USBDM - USB differential data minus
18. USBDP - USB differential data plus
19. USBID - USB ID pin
20. USBVCC - USB power supply

Functional Features

The MCP2221-I/P offers the following functional features:

• USB-to-UART/I2C bridge conversion
• Configurable GPIO pins for general-purpose I/O or I2C/SMBus bit-banged interface
• Support for full-speed USB communication
• High-speed I2C bus operation up to 400 kHz
• Wide range of supported UART baud rates
• Small form factor package for easy integration into various designs

Advantages and Disadvantages

Advantages

• Seamless bridging between USB and I2C/UART interfaces
• Flexible GPIO pin configuration for versatile applications
• Compact size allows for space-efficient designs
• Wide operating temperature range for diverse environments

Disadvantages

• Limited number of GPIO pins (8 in total)
• Requires external components for complete functionality
• Not suitable for high-speed UART communication

Working Principles

The MCP2221-I/P operates by converting USB signals into either I2C or UART signals, depending on the selected mode. It utilizes internal circuitry to handle the USB communication protocol and provides the necessary interface for I2C or UART communication. The GPIO pins can be configured as digital I/O or used for bit-banged I2C/SMBus communication.

Detailed Application Field Plans

The MCP2221-I/P finds applications in various fields, including but not limited to:

1. Embedded systems: Enables USB connectivity in microcontroller-based systems.
2. Industrial automation: Facilitates communication between USB-enabled devices and industrial equipment.
3. Consumer electronics: Integrates USB functionality into electronic devices such as smart home appliances, gaming consoles, etc.
4. Test and measurement equipment: Provides USB-to-I2C/UART conversion for data acquisition and control purposes.
5. Internet of Things (IoT): Enables USB connectivity in IoT devices for data transfer and control.

Detailed and Complete Alternative