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MCP2221A-I/SL

MCHPMCP2221A-I/SL

Microchip Technology
USB Interface IC USB 2.0 to I2C Converter with GPIO
1,290 in stock
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Overview

The MCP2221A-I/SL is a USB 2.0 to I2C/UART protocol converter that enables easy communication between a host PC and embedded peripherals. It features integrated GPIO pins and an internal EEPROM for storing custom configuration strings and serial numbers. The device operates without the need for custom USB driver development, using standard HID and CDC classes.

Why Choose This Part

The device supports both USB HID (for I2C/GPIO) and CDC (for UART) classes simultaneously, eliminating the need for complex driver installation on modern operating systems. It includes an integrated clock and voltage regulator, which reduces the total bill of materials by requiring very few external components.

Applications

PC-to-I2C Bridging
Allows a computer to control and monitor I2C slave devices like temperature sensors, EEPROMs, and DACs directly via USB.
Automated Test Equipment
Acts as a cost-effective interface for PC-based factory automation and functional testing of PCB assemblies.
Debug Console Access
Provides a USB-to-UART bridge for accessing microcontroller serial consoles and bootloaders during development.
GPIO Expansion
Offers four GPIO pins that can be controlled by a host application for tasks such as driving LEDs or reading switches.

Getting Started

To begin development, use the ADM00559 MCP2221 breakout board or the MCP2221A evaluation kit. Microchip provides a dedicated configuration utility for Windows to modify internal EEPROM settings and a C++ library for developing custom host-side software.

Part of Microchip USB Bridges family » MCP2221

MCP2221 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
MCP2221A-I/SL (this part) — 1,290
MCP2221A-I/ML VQFN-16 1,666
MCP2221A (Microchip) SOIC-14 9,526
MCP2221A-I/P DIP-14 214
Also available as: MCP2221A-I/ST, MCP2221AT-I/ML, MCP2221, MCP2221A-I/SN

Also Consider

FT232HL FTDI - Offers a higher-speed USB 2.0 interface supporting speeds up to 480 Mbps and a wider variety of synchronous serial protocols.
CP2112 SiLSilicon Labs - Dedicated USB-to-I2C bridge that utilizes a standard HID class for driverless operation in a smaller QFN package.

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Categories

Interface ICs > USB Interface ICs