USB2227-NU-05

Specialized Overview

The USB2227-NU-05 is a fourth-generation USB 2.0 flash media controller manufactured by Microchip Technology, designed to interface various memory cards to a USB bus. It integrates a USB 2.0 PHY and SIE, a Fast 8051 microprocessor with 30 MHz execution speed, and dedicated controllers for CompactFlash (CF), SmartMedia (SM), Memory Stick (MS), Secure Digital (SD), and MultiMediaCard (MMC). The device features on-chip power FETs for card supply, double-buffered bulk endpoints with 512-byte buffers, and supports simultaneous operation of specific device groups. It operates within a temperature range of 0°C to 70°C and utilizes a 128-pin VTQFP package.

Specialized Feature Summary

• Integrates multiple flash media controllers including CF, SM, MS, SD, and MMC within a single chip solution.
• Includes an internal 8051 microprocessor for low-speed control functions and firmware execution.
• Features on-chip power FETs to supply power to connected flash media cards directly.
• Supports hardware ECC correction and SD Security Command Extensions for enhanced data integrity.

Specialized Applications

• USB-based flash media readers
• Digital camera card interfaces
• Portable storage devices

Specialized Procurement Notes

Verify the specific suffix -05 against official documentation to confirm operational temperature range and package details. Ensure compatibility with required operating voltage levels and clock configurations before integration into the design.

Specialized Selection Notes

Select this component when a unified solution for multiple legacy and standard flash memory formats is required. Consider the integrated MCU capabilities if custom firmware logic or complex port management is needed without external processors.

Specialized Part Context

This part belongs to the USB2227/USB2228 family of fourth-generation USB 2.0 flash media controllers. These devices are engineered to provide a complete system solution for interfacing popular flash memory cards to USB 2.0 buses, supporting bootable BIOS environments.

Specialized Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers. Cross-referencing with other members of the USB222x family may be necessary based on specific pinout or feature requirements.