CP2112-F03-GMR

Controllers Overview

The CP2112-F03-GMR is a single-chip HID USB to SMBus master bridge manufactured by Silicon Labs. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and eight GPIOs within a compact 4x4 mm QFN-24 package. The device supports self-powered operation at 3.0 V to 3.6 V or USB bus power at 4.0 V to 5.25 V, with an I/O voltage range of 1.8 V to VDD. Normal supply current is typically 15 mA, while suspended current ranges from 130 µA to 230 µA. It features a 512-byte SMBus data buffer and a 194-byte one-time programmable ROM for product customization.

Controllers Feature Summary

• Eliminates firmware complexity by operating as a standard HID class device without requiring custom drivers.
• Integrates a USB transceiver and clock source, removing the need for external resistors or crystals.
• Includes a configurable SMBus interface with adjustable clock speed, timeouts, and retry counters.
• Provides eight user-configurable GPIO pins supporting input, open-drain, and push-pull modes.

Controllers Applications

• USB dongles
• Medical meters
• Point-of-Sale products
• Data loggers
• Handheld controllers

Controllers Procurement Notes

Verify the specific suffix 'GMR' indicates tape and reel packaging when sourcing components. Confirm that the ordering information matches the required temperature grade and hardware revision. Ensure compatibility with the intended host operating system libraries for HID-to-SMBus communication.

Controllers Selection Notes

Select this component when a simple USB connection to SMBus devices is required without firmware development. It is suitable for applications needing minimal PCB space and few external components. Consider the integrated voltage regulator and GPIO flexibility for diverse interface requirements.

Controllers Part Context

This part belongs to the Silicon Labs CP2112 series of USB interface controllers. It serves as a bridge between USB hosts and SMBus slave devices, simplifying integration in systems where traditional UART bridges are unsuitable due to driver requirements.

Controllers Replacement Considerations

CP2112-F03-GM is the tube-packaged equivalent of this component. Verify pinout and electrical specifications remain identical before substitution.

Controllers FAQ

Does the CP2112 require a custom driver installation?

No, it operates as a standard HID class device supported natively by Windows, Mac, and Linux operating systems.

What is the purpose of the VPP pin?

The VPP pin is used for programming the internal one-time programmable ROM to customize USB identifiers and strings.

Can the GPIO pins be used for real-time signaling?

GPIO read/write speeds are subject to USB bus timing; they are not recommended for real-time signaling applications.