USB2228-NU-10 USB 2.0 Card Controller | Microchip
料号： USB2228-NU-10 ✓ 量产中USB2228-NU-10 概述
A USB flash-media controller is a specialized interface IC that bridges a USB host and removable or embedded flash storage. Within the product hierarchy, it belongs to the USB interface-controller class, Interface ICs, and the broader integrated-circuit and semiconductor categories. Unlike a general-purpose USB device controller, the USB2228 is designed around flash-card media protocols and host-controller connectivity, simplifying the design of card readers, portable media devices, and USB storage adapters.
The manufacturer identifies USB 2.0 operation, flash-media support, and xD-Picture Card format support as defining features of the USB2228 family. Its 128-pin VTQFP package provides a high pin count for media control, data signaling, and supporting interface functions. The -10 ordering code identifies the specific Microchip commercial configuration associated with USB2228-NU-10, while the broader USB2228 family remains the relevant reference for device-level electrical and pin-assignment information.
The USB2228 occupies a specialized position between a USB host controller and flash-card media rather than serving as an endpoint controller for ordinary USB peripherals. This architecture makes it relevant to systems requiring dedicated card-format handling and flash-media connectivity. The exact supported card list, electrical limits, clock requirements, operating-temperature range, and transceiver details should be confirmed in the USB2228 manufacturer documentation before a new PCB is released.
Typical uses include USB card-reader equipment, embedded flash-storage interfaces, portable media accessories, and host-controlled data-transfer products. System designers may pair the controller with a USB host interface, flash-card connector, clock source, supporting logic, and power regulation. Its specialized role differs from a conventional USB-to-UART bridge or general-purpose USB hub, making protocol and media support more important than generic USB connectivity.
PCB planning must follow the manufacturer's pin-description table and reference circuitry. Pay particular attention to the 14 x 14 mm VTQFP footprint, exposed-pad requirements where applicable, clock routing, input/output impedance, USB data-pair routing, and flash-media connections. Confirm package drawing, pin numbering, and production programming requirements before committing the component to a layout.
This product page organizes the manufacturer feature description, package information, application guidance, sourcing answers, and substitution constraints for USB2228-NU-10. It also distinguishes documented USB2228 functionality from assumptions that require confirmation in the manufacturer datasheet, helping engineers evaluate the controller before PCB layout, sourcing, or production release.
直接替换替代料： USB2228-NU-10 ——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USB2228-NU-10 规格参数
| Device Type | USB 2.0 flash-media card controller |
| USB Generation | USB 2.0 |
| Supported Media Function | Flash media cards |
| xD-Picture Card Support | Supported for licensees of the format |
| Host Interface | USB host-controller interface |
| Package Type | 128-pin VTQFP |
| Package Body Size | 14 x 14 mm |
| 引脚数量 | 128 pins |
| 安装类型 | Surface mount |
| Product Family | USB2228 fourth-generation USB 2.0 flash card media controller |
| Manufacturer | Microchip Technology |
USB2228-NU-10 14 x 14 mm 引脚配置指南
USB2228-NU-10（14 x 14 mm 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： USB2228-NU-10.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2228-NU-10 适用于 6 应用s: USB Flash Card Reader, Portable Media Adapter, Embedded Flash Storage Interface, Industrial USB Data Acquisition, Instrumentation Media Port, Automated Test Equipment Storage.
USB Flash Card Reader
The USB2228-NU-10 fits a dedicated USB 2.0 flash-card reader because it is designed to interface a USB host controller with flash-media cards. Its specialized role allows the host-facing USB path and flash-card handling to be integrated in one controller rather than assembled from unrelated interface blocks. The design must still match the documented card formats, connector pin assignments, clocking, supply limits, and licensing conditions. In particular, xD-Picture Card support is intended for licensees of that format, so it should not be treated as a general license-free promise of support for every card standard.
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Portable Media Adapter
USB2228-NU-10 can serve as the flash-media interface in a portable media adapter that connects removable or embedded flash cards to a USB host. Its dedicated media-controller function is relevant when the product needs deterministic card handling rather than a general-purpose USB peripheral endpoint. A compact implementation must account for the 128-pin VTQFP footprint, connector routing, clock source, bypass capacitors, and power sequencing. The final product should use only media types explicitly supported by the manufacturer and should implement the required initialization and transfer workflow described in the USB2228 documentation.
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Embedded Flash Storage Interface
The USB2228-NU-10 is applicable to embedded storage products that expose flash-media data through a USB host. Its specialized USB 2.0 flash-media architecture can simplify the division of responsibilities between a host controller and card-format interface, especially in equipment designed around removable or interchangeable flash media. Engineering validation should include supported media, transfer behavior, clock accuracy, supply sequencing, connector signal integrity, and firmware compatibility. Because this is a specialized controller rather than a storage device itself, the design still requires suitable flash-media hardware and an appropriate USB host path.
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Industrial USB Data Acquisition
USB2228-NU-10 may fit industrial data-acquisition equipment that stores measurements on flash media and transfers files to a USB host. The controller's media-focused architecture is useful when the acquisition system requires deterministic access to flash cards instead of treating the storage medium as a generic USB drive. Industrial use also makes thermal, power-supply, and lifecycle review important, although numeric environmental limits must be taken from the manufacturer documentation. The enclosure, connector, grounding, USB routing, clock source, and card-format requirements should be reviewed together before the controller is frozen into a control board.
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Instrumentation Media Port
USB2228-NU-10 can support an instrumentation product that accepts flash-media cards for logging, transfer, or configuration storage. Its 128-pin VTQFP package leaves room for dedicated media-control and USB-facing functions, while the USB 2.0 interface provides a conventional path to a host computer. Designers should verify the controller's supported card list, operating limits, reference clock requirements, and implementation circuit against the manufacturer documentation. Board placement must also account for connector geometry and keep the USB data path controlled, since an external media port is often placed near a panel boundary and can be exposed to ESD and cable-transient conditions.
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Automated Test Equipment Storage
USB2228-NU-10 is relevant to automated test equipment that loads flash-card data from a USB workstation or records test results to removable media. A dedicated flash-media controller can provide a defined path between the tester and supported cards while keeping the USB host function separate from the test instrumentation. Implementation must validate the transfer workflow, media initialization, clocking, connector wiring, and power behavior against the USB2228 family documentation. For production test fixtures, also verify programming or configuration requirements and long-term availability of the exact ordering code before designing a single-source board around it.
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推荐产品汇总
工程参考数据： USB2228-NU-10 ——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 |
|---|---|
| Package | 128-pin VTQFP (14 x 14 mm) |
| Brand | Microchip Technology |
| USB Generation | USB 2.0 |
| Primary Function | USB flash-media card controller |
| Host Interface | USB host-controller interface |
| Media Support | Flash media cards |
| xD-Picture Card Support | Supported for format licensees |
| Pin Count | 128 pins |
| Mounting Type | Surface mount |
| Product Generation | Fourth-generation USB2228 family |
关键差异点
- Purpose-built flash-media interface （对比 General-purpose USB interface controller)
- Dedicated xD-Picture Card option （对比 USB controller without documented xD-Picture Card support)
- High-pin-count integration （对比 Low-pin-count simple USB interface)
设计说明
Create the land pattern from the Microchip USB2228 128-pin VTQFP package drawing rather than from a generic 128-pin library item. Confirm body dimensions, lead pitch, lead width, pin numbering, exposed-pad geometry, and paste recommendations. Place the controller so USB and flash-media routes can be short, while keeping the package thermal pad connected according to the manufacturer land-pattern and assembly instructions.
Route the USB differential pair as a controlled impedance path with continuous reference plane, minimal vias, and no unintended branches. Follow the manufacturer USB signal-routing and impedance recommendations, and position protection components where they can clamp transients without adding unwanted loading. Apply the same discipline to clock and flash-media routes because their timing and return-path requirements are part of the complete controller implementation, not optional layout refinements.
Do not select USB2228-NU-10 solely because a device is labeled USB 2.0. Confirm the exact ordering code, pinout, supported media, clock requirement, supply limits, and exposed-pad connection against the manufacturer documentation. A similarly named USB2228 configuration may differ in package, revision, or delivery form. This check is especially important for xD-Picture Card designs because format support is also subject to the stated licensing conditions.
合规信息
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were identified for USB2228-NU-10. Confirm current material and environmental declarations with Microchip before production release.