USB2227-NU-11 USB 2.0 Flash Card Controller | Microchip
N.º da peça: USB2227-NU-11 ✓ AtivoUSB2227-NU-11 Visão geral
A flash media controller is a specialized interface IC that manages command transfer, card detection, data exchange, and media power control between a host system and removable or embedded flash storage. In the product hierarchy, it is a USB interface controller, an interface IC, an integrated circuit, and a semiconductor. The USB2227 belongs to the Microchip USB2227 family, which was developed as a single-chip solution for USB-connected flash-card equipment.
The principal feature of the USB2227-NU-11 is its fourth-generation USB 2.0 flash-card media-controller architecture. Integrated card power FETs reduce the external circuitry needed to manage flash-card power. The device supports IDE-compatible flash-media operation, while the USB2227 family intentionally omits xD-Picture Card support, unlike the closely related USB2228. Its commercial operating-temperature grade is reported as 0 to 70 degrees Celsius.
The USB2227-NU-11 is packaged in a low-profile 128-VTQFP, also described as a 128-pin TQFP with a 14 x 14 mm body and approximately 1 mm height. This package provides enough signal and power pins for card-power control, storage interfaces, USB signaling, and support circuitry. Because the package dimensions and pin mapping are critical for PCB compatibility, engineers should verify the manufacturer pinout and land pattern directly against the official USB2227/USB2228 datasheet before layout release.
Typical uses include USB card readers, portable media devices, digital-camera accessories, industrial data-collection equipment, and embedded systems that read flash-memory cards through a USB host connection. The controller is most appropriate when a board requires dedicated flash-card interface circuitry rather than a general-purpose host controller. Its integrated card power FETs and USB 2.0 media interface can simplify the surrounding design while preserving a dedicated path to compatible flash storage.
The principal design consideration is compatibility across the USB host, flash-card media, power rails, and exposed 128-pin footprint. Input and output capacitors, media-power routing, high-speed USB signal integrity, and ground-return paths must follow the manufacturer reference layout and recommended component values. The exact operating voltage of each labeled supply, supported media matrix, clocking requirements, and complete pin assignments are not included in the supplied search results and must be confirmed from the manufacturer datasheet.
This page combines verified distributor availability, manufacturer family information, package details, practical application guidance, and an honest drop-in comparison. Its value is the separation of confirmed USB2227-NU-11 facts from unavailable specifications, helping engineers identify what can be used for initial sourcing and what still requires datasheet-level verification.
Alternativas drop-in para USB2227-NU-11 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com USB2227-NU-11 (mesmo formato e footprint) — diferindo em Package Type, xD-Picture Card Support.
USB2227-NU-09
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
USB2227-I/AA
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
USB2227-NU/AA
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
USB2228-I/AA
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
USB2227-NU-11 Especificações
| Device Type | USB 2.0 flash memory drive controller |
| Generation | 4th generation |
| USB Interface | USB 2.0 |
| Integrated Card Power FETs | Yes |
| Storage Interface | IDE-compatible flash media interface |
| xD-Picture Card Support | Not supported |
| Primary Supply Voltage | 3.3 V |
| Internal Supply Voltage | 1.8 V |
| Temperatura de operação | 0 to 70 °C |
| Temperature Grade | Commercial |
| Package Type | 128-VTQFP |
| Package Dimensions | 14 x 14 mm, approximately 1 mm high |
| Número de pinos | 128 pins |
| Tipo de montagem | Surface mount |
| Lead-Free Status | RoHS compliant |
| Observed Distributor Price | USD 4.4442 per unit as of 2026-10-30 |
Guia de Configuração de Pinos do USB2227-NU-11 14 x 14 mm, approximately 1 mm high
Configuração de pinos para USB2227-NU-11 (pacote 14 x 14 mm, approximately 1 mm high). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para USB2227-NU-11.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
USB2227-NU-11 é adequado para 6 aplicaçãos: USB Flash Card Reader, Portable Media Device, Industrial USB Data Acquisition, Digital Camera Card Interface, Embedded Flash Storage Gateway, USB Media Adapter.
USB Flash Card Reader
The USB2227-NU-11 fits a dedicated USB flash-card reader because it is specifically designed to interface a USB host controller with flash media. Its USB 2.0 interface and IDE-compatible flash-media operation provide the core functions needed for command transfer and card data access, while integrated card power FETs reduce the external power-control burden. The controller is installed in a 128-VTQFP with reported 3.3 V and 1.8 V supply requirements. Before schematic release, designers must confirm the exact supported card matrix, card-power limits, clock requirements, and pin assignments from the manufacturer datasheet.
Recomendado
Portable Media Device
The USB2227-NU-11 is appropriate for a portable media device that reads compatible flash cards through a USB 2.0 connection. Its fourth-generation flash-media controller architecture provides a dedicated interface between the host and storage media rather than relying on a general-purpose host controller for media handling. Integrated card power FETs can simplify card-insertion and card-removal power sequencing, while the 128-VTQFP supports the numerous signal and power connections required by the device. The commercial 0 to 70 °C specification suits many indoor products, although the final enclosure temperature and media requirements must be checked.
Recomendado
Industrial USB Data Acquisition
The USB2227-NU-11 can support an industrial USB data-acquisition product that accepts flash memory as removable storage. USB 2.0 provides the interface to the acquisition host, while the controller's IDE-compatible flash-media architecture handles communication with supported cards. The integrated card power FETs are useful in equipment where controlled media insertion and removal are required, and the 14 x 14 mm 128-VTQFP permits a reasonably compact controller footprint. Because the verified -11 grade covers 0 to 70 °C, an enclosure exposed to wider temperatures should use an explicitly approved industrial-temperature ordering option or another qualified controller.
Recomendado
Digital Camera Card Interface
The USB2227-NU-11 is suitable for a camera-related accessory that transfers images from compatible flash media to a USB host. It is a fourth-generation USB 2.0 flash-card controller with integrated card power FETs, giving the accessory a dedicated media interface and controlled card-power path. The reported 3.3 V primary supply and 1.8 V internal supply make board-level rail planning necessary, particularly where the device operates from a compact portable source. Engineers should confirm that the targeted camera card type is supported and that image throughput, card removal behavior, and connector requirements meet the system specification.
Recomendado
Embedded Flash Storage Gateway
The USB2227-NU-11 fits an embedded flash-storage gateway that exposes compatible removable flash media to a USB host. Its dedicated USB 2.0 media-controller function separates storage-card handling from the system processor, while IDE-compatible operation supplies the controller interface expected by flash media. Integrated card power FETs may reduce component count around card detection and power control. For an embedded gateway, designers must account for the 128-VTQFP footprint, exact power-domain sequencing, media-compatibility matrix, and any timeout or fault-handling requirements not stated in the supplied snippets.
Recomendado
USB Media Adapter
The USB2227-NU-11 is appropriate for a USB media adapter designed to add flash-card storage to a host computer. The controller directly addresses the USB 2.0 host-to-flash-media path, and its integrated card power FETs support a more contained card-power implementation than a discrete solution. The commercial temperature range of 0 to 70 °C covers typical indoor adapter environments. Production designers still need to validate every supported card format, connector insertion cycles, card-detection behavior, media power requirements, and the complete 128-pin layout against the official datasheet before fabrication.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para USB2227-NU-11 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | USB2227-NU-09 | USB2227-I/AA | USB2227-NU/AA | USB2228-I/AA |
|---|---|---|---|---|---|
| Package | 128-VTQFP, 14 x 14 mm | 128-VTQFP, 14 x 14 mm | 128-VTQFP, 14 x 14 mm | 128-VTQFP, 14 x 14 mm | 128-VTQFP, 14 x 14 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | USB 2.0 flash memory drive controller | USB 2.0 flash memory drive controller | USB 2.0 flash memory drive controller | USB 2.0 flash memory drive controller | USB 2.0 flash memory drive controller |
| Primary Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Internal Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Integrated Card Power FETs | Yes | Yes | Yes | Yes | Yes |
| xD-Picture Card Support | No | No | No | No | Yes |
| USB 2.0 Interface | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- Integrated flash-card power control (vs USB2240I-AEZG-06)
- Dedicated fourth-generation flash-media architecture (vs USB2642/ML)
- xD-Picture Card support omitted for a focused implementation (vs USB2228-I/AA)
- Verified commercial-ordering availability (vs USB2227-NU-09)
Notas de projeto
Treat the USB2227-NU-11 as a fine-pitch, 128-pin mixed-signal layout task. Place the controller according to the exact manufacturer land pattern and keep USB data traces short, continuous, and over a continuous ground reference. Do not use the generic TQFP-128 footprint from an unrelated datasheet: confirm exposed-pad requirements, pad dimensions, and pin numbering against USB2227-NU-11 documentation before Gerber release.
The verified listings identify both 3.3 V and 1.8 V supply requirements, so these rails must be treated as separate power domains rather than assumed interchangeable. Map every supply and ground pin from the manufacturer datasheet, provide local high-frequency decoupling, and verify media-card power current against the controller's limits. The integrated card power FETs simplify card-power control but do not eliminate the need for correct voltage selection and rail sequencing.
USB 2.0 data routing should follow the manufacturer's reference layout, with impedance-controlled differential pairs, short connector-to-controller paths, and no stubs or unnecessary test pads. Maintain continuous return paths beneath the data pairs and separate sensitive clock or media-interface traces from noisy switching nodes. Because the supplied results do not expose detailed rise-time or routing values, use the official datasheet and reference design rather than generic USB routing assumptions.
Do not substitute the USB2228 or a generic USB interface controller solely because its USB version and supply voltage match. The USB2228 adds xD-Picture Card support, while the USB2240I-AEZG-06 and USB2642/ML use smaller packages and therefore are not PCB drop-ins. For any alternate USB2227 suffix, verify pin compatibility, operating-temperature grade, supported media, and ordering status before changing an approved design.
Informações de conformidade
RoHS compliance is explicitly stated in the verified component listings. The supplied results do not independently confirm REACH, lead-free finish, halogen-free status, conflict-minerals compliance, or automotive qualification. The commercial operating-temperature classification does not by itself establish AEC-Q100 status.
