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Product Detailed Parameters
- Description：4TH GENERATION USB2.0 FLASH MEDI
- Series：*
- Mfr：SMSC
- Package：Bulk
- Applications：-
- Core Processor：-
- Program Memory Type：-
- Controller Series：-
- RAM Size：-
- Interface：-
- Number of I/O：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The USB2228-NU-05-E2 is a fourth-generation USB 2.0 flash media controller manufactured by SMSC Corporation. It integrates card power field-effect transistors (FETs) to manage power delivery for various memory cards. The device supports simultaneous operation of multiple storage devices, including Memory Stick, Memory Stick PRO, and Secure Digital formats. Designed for high-speed data transfer compliant with USB 2.0 specifications, it utilizes a 128-pin VTQFP package measuring 14x14 mm. The controller operates within a supply voltage range of 3V to 3.6V, providing a compact solution for portable electronics requiring robust flash media interfacing capabilities.
Feature Summary
- Integrates on-chip hardware circuitry for High Speed Memory Stick and Memory Stick PRO support
- Includes integrated card power FETs for direct power management of connected media
- Enables simultaneous operation of multiple supported storage device types
Applications
- Portable digital cameras
- Mobile phones and smartphones
- MP3 and MP4 players
- Personal digital assistants (PDAs)
Procurement Notes
Verify the manufacturer designation carefully, as this component was originally developed by SMSC Corporation before its acquisition by Microchip Technology. Ensure the part number suffix matches the specific package variant required for your design. Confirm that the integrated power FET configuration aligns with your target memory card power requirements. Cross-reference the datasheet version to ensure compatibility with current firmware or driver implementations.
Selection Notes
Select this controller when a single chip solution is needed to support diverse flash media standards without external power switching components. It is suitable for designs prioritizing board space reduction through integrated FETs. Consider the 128-pin VTQFP footprint during PCB layout planning. Evaluate the thermal performance requirements associated with the 14x14 mm package size in dense assemblies.
Part Context
This component belongs to the USB2228 family of flash media controllers from SMSC. These controllers were widely used in consumer electronics prior to the industry shift toward higher bandwidth interfaces like USB 3.0 and UHS SD standards. The USB2228 series established a baseline for multi-format support in portable devices, bridging the gap between early USB mass storage implementations and modern high-capacity memory solutions.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the proprietary nature of the integrated FET control logic and specific pinout configurations, direct pin-to-pin replacements may require schematic modifications. Consult Microchip Technology for current portfolio equivalents if discontinuation is a concern.
