USB2224-NE-04 USB 2.0 Flash Media Controller | SMSC
料号： USB2224-NE-04 ✗ 停产USB2224-NE-04 概述
A USB mass-storage class peripheral controller is an interface integrated circuit that connects a host computer to removable or embedded flash storage. It handles USB communication, mass-storage commands, media interfacing, and data transfer while allowing standard USB hosts to recognize supported media as removable storage. Within the hierarchy, USB2224-NE-04 is a USB interface controller, storage interface IC, and logic IC.
The controller supports USB 2.0 operation and eight named flash-media formats: CompactFlash including CF Ultra I and II, SmartMedia, XD, Memory Stick, Memory Stick DUO, Memory Stick Pro, Secure Digital, and MultiMediaCard. CompactFlash support in True IDE mode is an important implementation requirement for systems using that media family. These capabilities make the device suitable for card readers, portable storage, and legacy embedded-storage equipment.
The USB2224 is a bus-powered mass-storage controller intended to support both CompactFlash and removable flash-memory interfaces. Bus-powered operation allows the device to obtain operating power from the USB connection, reducing the need for a separate local supply in suitable portable designs. Its architecture is organized around USB device control, mass-storage command handling, and flash-media interfacing rather than general-purpose host processing.
Typical applications include USB CompactFlash readers, multi-format memory-card readers, portable media players, industrial data-collection terminals, and legacy computer peripherals. Product development must verify the electrical requirements of every media socket and the host compatibility of the selected flash-memory standard. USB cable length, inrush current, media insertion behavior, and operating-system support also require system-level validation.
Design the USB interface and media connectors according to the manufacturer pin-description and application schematics. Preserve the required USB decoupling and routing topology, account for bus-powered current limits, and provide protection appropriate to exposed external connectors. Validate signal integrity and enumeration with the exact media cards intended for production because electrical behavior can vary across card formats and capacity generations.
This page consolidates the controller function, supported-media coverage, sourcing guidance, and design cautions into a concise engineering reference. For an exact pin-compatible replacement, verify package dimensions, exposed-pad requirements, pin names, USB electrical ratings, and media-interface assignments against the original design before approving any substitution.
直接替换替代料： USB2224-NE-04 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料USB2224-NE-04 规格参数
| Product Type | USB 2.0 bulk-only mass-storage peripheral controller |
| USB Interface Generation | USB 2.0 |
| Power Architecture | Bus powered |
| Supported Flash-Media Families | 8 named families: CompactFlash, SmartMedia, XD, Memory Stick, Memory Stick DUO, Memory Stick Pro, Secure Digital, and MultiMediaCard |
| CompactFlash Mode | True IDE mode only |
| CompactFlash Generations | CF and CF Ultra I/II |
| USB Device Class | Mass Storage Class |
USB2224-NE-04 standard 引脚配置指南
USB2224-NE-04（standard 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： USB2224-NE-04.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2224-NE-04 适用于 6 应用s: USB CompactFlash Card Reader, Multi-Format Flash Card Reader, Portable Data Transfer Device, Industrial Flash-Storage Adapter, Legacy Computer Media Peripheral, Secure Data Transfer and Backup Dock.
USB CompactFlash Card Reader
The USB2224-NE-04 fits a USB CompactFlash reader because it explicitly supports CompactFlash, CF, and CF Ultra I/II devices through a True IDE-mode interface while presenting a USB 2.0 bulk-only mass-storage device to the host. The controller can handle the USB device and flash-media interface functions without relying on a general-purpose host processor. The implementation should match the manufacturer’s CompactFlash signal arrangement, provide suitable media power and insertion detection, and validate enumeration with the operating systems used by the target customer.
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Multi-Format Flash Card Reader
For a multi-format reader, the USB2224-NE-04 provides one USB 2.0 mass-storage endpoint alongside dedicated support for CompactFlash, SmartMedia, XD, Memory Stick, Memory Stick DUO, Memory Stick Pro, Secure Digital, and MultiMediaCard. This broad media coverage can simplify product planning around legacy card standards. Each removable socket still requires its own electrical, detection, and power-management implementation, so designers should compare every media interface against the manufacturer application information before releasing a multi-slot PCB.
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Portable Data Transfer Device
The bus-powered architecture of the USB2224-NE-04 supports portable media-transfer products where power is obtained from the USB connection. The controller supports USB 2.0 and eight flash-media families, allowing one platform to cover CompactFlash, SmartMedia, XD, Memory Stick variants, Secure Digital, and MultiMediaCard. Designers should budget for USB inrush and card insertion peaks, maintain the required power sequencing, and verify that the complete reader remains within host-provided current limits.
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Industrial Flash-Storage Adapter
USB2224-NE-04 can serve as the interface between an industrial host and supported removable or embedded flash media. Its dedicated USB 2.0 bulk-only mass-storage function is appropriate for equipment that needs standardized removable-media access without exposing the raw media bus to the host. CompactFlash True IDE mode is particularly relevant to legacy industrial storage. Production validation should include repeated insertion, power-loss recovery, cable transients, operating-system compatibility, and the environmental conditions expected at the equipment location.
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Legacy Computer Media Peripheral
The USB2224-NE-04 is appropriate for a legacy computer peripheral that needs to expose supported flash cards as a USB mass-storage device. It supports USB 2.0 and a broad collection of card families, including CompactFlash, SmartMedia, XD, Memory Stick, Secure Digital, and MultiMediaCard. This makes it useful for compatibility-oriented equipment and data-transfer products. Engineers should test enumeration, file-transfer behavior, suspend and resume, and card-removal handling with every operating-system and media-generation combination required by the product specification.
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Secure Data Transfer and Backup Dock
A backup dock can use the USB2224-NE-04 to expose supported flash media through a standardized USB 2.0 mass-storage interface. The controller’s support for CompactFlash and seven additional named media families enables useful coverage in docking products intended for data transfer or recovery workflows. The system design must control card power, provide deterministic insertion detection, and maintain USB signal integrity through the connector and cable path. Media-speed and sustained-transfer testing is required because supported card technologies can have different performance characteristics.
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推荐产品汇总
工程参考数据： USB2224-NE-04 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Product Type | USB 2.0 bulk-only mass-storage peripheral controller |
| Brand | SMSC |
| Power Architecture | Bus powered |
| USB Interface | USB 2.0 |
| Supported Media Families | 8 named families |
| CompactFlash Support | CF and CF Ultra I/II in True IDE mode only |
| USB Device Class | Mass Storage Class |
设计说明
Treat USB bus power as a system constraint rather than an unlimited source. Check the controller operating voltage, USB attachment current, card insertion inrush, and the worst-case combined load against the required USB connection. Provide local bulk and high-frequency decoupling at the controller and media-power circuitry, and ensure that card removal or fault conditions cannot back-feed a rail or force an unintended reset.
Use the manufacturer pin-description table and application schematic as the basis for routing. Keep USB data and power paths compact, provide the prescribed bypass capacitance close to the relevant pins, and match media-interface traces according to the timing and loading requirements of each supported card family. Because the device supports eight media families, review the complete connector and routing design for signal-integrity and crosstalk risks rather than validating only one card socket.
Do not assume that every CompactFlash card can operate in True IDE mode, and do not infer generic USB compatibility from the USB 2.0 designation alone. Validate card insertion, removal, power sequencing, media access, and host enumeration with each intended card family. Also verify that any proposed replacement matches the exact numbered pins, package, electrical limits, and media assignments rather than merely offering a similar USB storage feature.
合规信息
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements were identified for the exact USB2224-NE-04 ordering suffix.