USB2229-NU-02 - USB 2.0 Card Reader Controller | Microchip
料号： USB2229-NU-02 ✗ 停产USB2229-NU-02 概述
A USB flash-media controller is a mixed-signal interface semiconductor that bridges a USB host and removable flash storage. It belongs to the controller hierarchy: USB interface controller, peripheral interface IC, digital and analog mixed-signal IC, and ultimately semiconductor. By converting host USB traffic into media-specific commands and coordinating card power, this device reduces the processing burden placed on an external system controller.
The verified feature set includes fifth-generation USB 2.0 operation, support for mainstream flash-card interfaces, IrDA 1.1 with a parallel interface, integrated card power FETs, and operation from a 3.3 V supply. The 128-pin TQFP package provides the mixed analog, digital, logic, power-management, and external media-interface connections required by this multifunction controller.
According to Microchip Technology, USB2229-NU-02 is identical to the USB2230 except that USB2230 adds xD-Picture Card support. This distinction is important in drop-in evaluation: a USB2230 can offer broader media compatibility, but software, firmware, card-support tables, and board requirements must be reviewed before substitution. The IrDA and parallel-interface requirement must also match the target design.
Typical uses include USB card readers, multifunction peripherals that combine storage with infrared communication, and embedded systems that need to expose flash media through a USB 2.0 host connection. The integrated card power FETs simplify card-interface power management, while the IrDA block supports infrared data communication in designs that require both functions.
Designers should verify the complete 128-pin pinout, supported card standards, electrical timing, and firmware support against the manufacturer datasheet before layout or firmware work. Because the package contains many mixed-signal and high-speed USB functions, careful grounding, card-interface isolation, power sequencing, and signal-integrity review remain essential.
This product page consolidates verified manufacturer and distributor information, packaging details, functional comparisons, application guidance, and design cautions. It also distinguishes documented drop-in candidates from unsupported cross-brand alternatives, helping engineers make an evidence-based replacement decision without assuming that every USB card controller is electrically or firmware compatible.
直接替换替代料： USB2229-NU-02 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
USB2230
✅ 直接替换📋 参考替代料（不在目录中）
USB2229-NU-02 规格参数
| Product Type | USB flash media and IrDA controller |
| USB Generation | 5th-generation USB 2.0 |
| USB Host Interface Count | 1 host port |
| Supported Media | Mainstream flash card media |
| IrDA Standard | IrDA 1.1 |
| IrDA Interface | Parallel interface |
| 电源电压 | 3.3 V |
| Integrated Card Power FETs | Yes |
| 封装 | 128-pin TQFP (14 x 14 mm) |
| 引脚数量 | 128 pins |
| 安装类型 | Surface mount |
| Manufacturer Pack Quantity | 90 units |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
| Datasheet Length | 28 pages |
USB2229-NU-02 128-pin tqfp (14 x 14 mm) 引脚配置指南
USB2229-NU-02（128-pin tqfp (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： USB2229-NU-02.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2229-NU-02 适用于 6 应用s: USB Flash Card Reader, Multifunction USB Storage Peripheral, IrDA Data Transfer Adapter, Embedded USB Media Gateway, USB Imaging and Legacy Peripheral, Industrial USB Data Acquisition Unit.
USB Flash Card Reader
The USB2229-NU-02 fits a USB flash card reader because it combines a fifth-generation USB 2.0 host interface with support for mainstream flash-card media and integrated card power FETs. It operates from a 3.3 V supply, reducing the number of external power-control elements needed around supported card interfaces. Its 128-pin TQFP package also exposes the mixed signal, logic, and media connections required by a multifunction reader. The key design trade-off is that the complete supported-card list and electrical timing must be verified against the manufacturer datasheet. Firmware must also match the selected card architecture, while PCB layout should follow the recommended USB and card-power arrangements to limit insertion transients and signal integrity issues.
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Multifunction USB Storage Peripheral
USB2229-NU-02 is suitable for a multifunction USB storage peripheral that exposes flash media while also supporting infrared data communication. The device provides one USB host-port connection, mainstream flash-media support, integrated card power FETs, and an IrDA 1.1 parallel interface, all from a 3.3 V supply. That combination can reduce the number of external interface blocks in a copier, imaging accessory, or legacy data-transfer product. The implementation must confirm that USB bandwidth, IrDA timing, and firmware scheduling meet the product's workload. Power sequencing deserves attention because removable media insertion can create abrupt load changes, while the USB and IrDA paths require controlled grounding to prevent communication errors.
推荐
IrDA Data Transfer Adapter
The USB2229-NU-02 can support an IrDA-oriented adapter because its verified feature set includes IrDA 1.1 with a parallel interface alongside USB 2.0. A host computer can therefore use the USB connection while the system exposes infrared transfer capability to a compatible peripheral. The 3.3 V supply requirement and integrated card power FETs make the device suitable for compact peripheral hardware, although IrDA timing and signal levels must be checked against the system architecture. Designers should treat the IrDA path as a distinct mixed-signal interface, provide stable references and filtering as required by the manufacturer circuit, and verify software-driver support. USB enumeration and IrDA transfer behavior should be validated together under maximum data traffic.
推荐
Embedded USB Media Gateway
USB2229-NU-02 fits an embedded USB media gateway where a single USB host port must connect to removable flash media. Its integrated card power FETs can simplify card-interface power management, while the 128-pin TQFP package provides the necessary mixed-signal and digital connections. The controller is most appropriate when the system also requires IrDA 1.1 support; otherwise, a simpler dedicated media bridge may be preferable. Firmware support, card-format compatibility, and the actual host controller load determine whether this multifunction device is appropriate. In a gateway, thermal and signal-integrity checks should include sustained transfers, repeated card insertion, cable transients, and ground-current behavior under the specified 3.3 V operating condition.
推荐
USB Imaging and Legacy Peripheral
USB2229-NU-02 can support a legacy imaging or data-transfer peripheral that combines removable flash storage with IrDA communication. The fifth-generation USB 2.0 interface, IrDA 1.1 parallel interface, and integrated card power FETs provide a consolidated controller solution in a 128-pin TQFP package. This is useful where a product must retain infrared workflows while adding direct media access to a USB host. The engineering trade-off is functional complexity: both USB and IrDA paths need independent verification for timing, interrupts, firmware, and EMI behavior. Board designers should use the manufacturer's recommended reference circuit, maintain short high-speed USB routing, provide stable bypass capacitance, and validate real-world card insertion and removal sequences before production release.
推荐
Industrial USB Data Acquisition Unit
USB2229-NU-02 may be incorporated into an industrial USB data-acquisition unit that needs removable media logging and an IrDA path for legacy sensors or service equipment. Its 3.3 V operation, single USB host connection, mainstream flash-media support, integrated card power FETs, and IrDA 1.1 parallel interface provide the core interfaces for such a system. A robust implementation should prioritize uninterrupted USB communication during card insertion, deterministic IrDA timing, and controlled power behavior. The controller's verified package is a 128-pin TQFP, so routing requires careful fanout and a continuous ground plane. Because verified environmental limits and detailed electrical timing were not included in the supplied data, industrial temperature, ESD, and immunity requirements must be confirmed from the datasheet rather than assumed.
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推荐产品汇总
工程参考数据： USB2229-NU-02 ——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 | USB2230 |
|---|---|---|
| Package | 128-pin TQFP (14 x 14 mm) | 128-pin TQFP (14 x 14 mm) |
| Brand | Microchip Technology | Microchip Technology |
| Product Type | USB flash media and IrDA controller | USB flash media and IrDA controller |
| USB Generation | 5th-generation USB 2.0 | 5th-generation USB 2.0 |
| USB Host Interface Count | 1 host port | 1 host port |
| IrDA Support | IrDA 1.1 parallel interface | IrDA 1.1 parallel interface |
| Supply Voltage | 3.3 V | 3.3 V |
| Integrated Card Power FETs | Yes | Yes |
| xD-Picture Card Support | No | Yes |
关键差异点
- Documented family relationship with a defined feature boundary （对比 USB2230)
- Single-device integration of USB media and IrDA （对比 USB2230)
- Documented 3.3 V operation and manufacturer pack quantity （对比 USB2230)
设计说明
Use the manufacturer datasheet's 128-pin TQFP layout and recommended component placement as the authority for the PCB. Keep USB routing short, provide a continuous ground reference beneath the signal paths, place bypass capacitors close to the appropriate supply pins, and isolate card-interface routing from sensitive IrDA and USB paths where the reference design shows separation. Do not derive the complete footprint or pin assignments from distributor summaries.
The USB2229-NU-02 operates from 3.3 V and includes card power FETs, but the integration does not remove the need to validate every supported card's insertion current, removal transients, and voltage limits. Use the datasheet's card power network and sequencing arrangement, keep high-current card-return paths away from sensitive grounds, and test repeated insertion events. The exact FET ratings and capacitor values were not present in the supplied evidence and must not be guessed.
Treat the USB 2.0, IrDA, and flash-card interfaces as separate high-speed or noise-sensitive paths. Route USB pairs as a controlled impedance pair if the reference design specifies one, minimize stubs and test points, maintain ground continuity, and apply filtering only where supported by the manufacturer circuit. Validate eye behavior, IrDA timing, and card signaling at the system's intended data rate because the supplied results do not provide the complete AC timing tables.
Do not treat USB2230 as an unconditional substitute merely because the two devices are closely related. Microchip states that USB2230 adds xD-Picture Card support, and a valid substitution also requires matching the exact package, all 128 pin assignments, electrical limits, media support, and firmware. Also avoid generic USB-to-storage controllers as alleged drop-ins: the target combines USB, flash media, IrDA 1.1, and integrated card power functionality.
合规信息
The supplied verified results identify MSL 1 (Unlimited) and a 3.3 V supply but do not explicitly establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The AEC-Q100 field uses unknown because the permitted standard values do not include that option.
