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CP2112

SiLCP2112

Silicon Labs
USB-to-SMBus/I2C bridge with GPIO capabilities for USB-to-I2C/GPIO use cases.
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Overview

The Silicon Labs CP2112 is a USB-to-SMBus/I2C bridge controller that simplifies the integration of I2C devices into USB-enabled systems. It functions as a standard Human Interface Device (HID), eliminating the need for custom driver development. With integrated GPIOs, it also offers versatile control capabilities for various applications.

Why Choose This Part

This device offers a plug-and-play solution for USB-to-I2C/SMBus communication due to its HID class compliance, meaning no custom drivers are required for Windows, Mac, or Linux. Its integrated clock and USB transceiver reduce external component count and board space. The 8 configurable GPIOs provide additional flexibility for system control and status indication.

Applications

Sensor Interfacing
Connecting I2C-based environmental sensors, accelerometers, or gyroscopes to a host PC or embedded system via USB for data logging and analysis.
Prototyping and Development
Rapidly prototyping and debugging I2C peripheral devices from a development computer without needing complex microcontroller firmware for USB communication.
System Configuration and Control
Configuring settings on I2C-controlled components like DACs, ADCs, or power management ICs in production testing or field service applications.
LED Control
Driving and controlling LEDs via I2C or using the integrated GPIOs for status indication or simple lighting applications.
Industrial Equipment Monitoring
Interfacing with industrial I2C-based transducers and actuators for data acquisition and control within a USB ecosystem.

Key Specifications

Type Interface
Contents Board(s), Cable(s)
Embedded No
Function USB 2.0 to SMBus Bridge
Primary Attributes Full Speed (12Mbps)
Utilized IC / Part CP2112
Secondary Attributes On-Board LEDs

Getting Started

To get started, the CP2112 Evaluation Kit (CP2112-EK) is available, providing a ready-to-use platform for development. Silicon Labs offers a free USBXpress host API library and a Windows-based CP2112 software utility that simplifies communication and configuration. Sample code and documentation are provided to assist with integration.

CP2112 Family

Part NumberDifferenceStock
CP2112-F03-GM F03-GM 11,064
CP2112-GM GM —
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