USB2223-NU-02 - USB 2.0 Flash Media Controller | Microchip
N.º da peça: USB2223-NU-02 ✗ Fim de vidaUSB2223-NU-02 Visão geral
A USB controller is a type of interface controller that connects a host computer to peripheral equipment using the Universal Serial Bus standard. Within the electronics hierarchy, this product is a USB interface controller, then an interface IC, then an integrated circuit. USB 2.0 describes the interface generation supported by the controller, while the parallel interface provides the connection to compatible flash-memory media and peripherals. The supported media family includes SmartMedia, xD Picture Card, Memory Stick, Secure Digital, and CompactFlash.
The USB2223-NU-02 supports high-speed USB 2.0 data transfer and direct connection to flash memory devices. According to the verified product listings, it can operate multiple attached devices simultaneously, although only one device within a particular media group may be active at a time. This operating restriction is important when designing card-reader or multi-slot systems because the controller arbitrates access among supported media types rather than treating every attached device as independently concurrent.
Typical uses include legacy CompactFlash and Secure Digital card readers, USB storage adapters, digital-camera accessories, and embedded systems that must bridge USB hosts to removable flash media. Because the controller targets parallel flash-media devices, it should not be confused with a general-purpose USB hub or a USB 3.x hub controller. A design based on the 128-pin TQFP also needs a pin-accurate footprint, adequate high-speed routing discipline, and verified power sequencing.
For new USB storage products, confirm that the required flash-media protocol, connector, card-detection signals, and host compatibility match the controller before committing the board layout. The verified data identifies USB2223-NU-02 as discontinued or obsolete at one distributor and simultaneously shows distributor inventory at another, so lifecycle status should be treated as obsolete while availability may depend on remaining lot stock. Pricing is not published in the supplied sources.
This page consolidates the verified supply-voltage, supply-current, package, protocol, and supported-media information with sourcing limitations, obsolete-part guidance, and design cautions that are not presented together in a typical distributor listing.
Alternativas drop-in para USB2223-NU-02 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasUSB2223-NU-02 Especificações
| Product Type | USB 2.0 flash media controller |
| Controller Type | USB 2.0 Controller |
| USB Protocol | USB 2.0 |
| Host Interface | Parallel/Serial |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Supply Current | 15 mA |
| Encapsulamento | 128-TQFP (14 x 20 mm) |
| Número de pinos | 128 pins |
| Tipo de montagem | Surface mount |
| Supported Media | SmartMedia, xD Picture Card, Memory Stick, Secure Digital, CompactFlash |
| Simultaneous Device Operation | Supported, with one active device per specific group |
| Data Transfer Function | USB 2.0 high-speed data transfer |
| Status do ciclo de vida | Marked obsolete by one verified distributor |
Guia de Configuração de Pinos do USB2223-NU-02 128-tqfp (14 x 20 mm)
Configuração de pinos para USB2223-NU-02 (pacote 128-tqfp (14 x 20 mm)). 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 USB2223-NU-02.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
USB2223-NU-02 é adequado para 6 aplicaçãos: CompactFlash Card Reader, Secure Digital Data Transfer Adapter, Multi-Slot Removable Media Reader, Legacy Digital Camera Interface, USB Flash Storage Adapter, Embedded USB Service Interface.
CompactFlash Card Reader
The USB2223-NU-02 fits a legacy CompactFlash reader because CompactFlash is explicitly listed among the media types controlled by the device. Its 3 V to 3.6 V operating range and 15 mA listed supply current allow it to sit between a USB 2.0 host interface and a parallel flash-media interface without using a separate USB mass-storage bridge. The design must still implement the required card-detection and power-control signals and route the parallel bus according to the manufacturer timing data. Because the controller is obsolete, it is most appropriate for maintaining an established reader design rather than starting a long-life consumer program.
Recomendado
Secure Digital Data Transfer Adapter
A Secure Digital adapter can use the USB2223-NU-02 because Secure Digital is one of the flash-media types named in the verified controller information. The device provides the USB 2.0 host-facing controller function and parallel interface needed to bridge a removable flash card to a computer. The 15 mA listed operating supply current is a useful baseline, but total system demand will also include card-power requirements and external interface circuitry. Engineers should confirm protocol details, card insertion detection, and write-protection handling in the full datasheet before committing this legacy controller to a new adapter.
Recomendado
Multi-Slot Removable Media Reader
The USB2223-NU-02 is appropriate for a multi-slot reader that exposes supported flash-media formats through one USB 2.0 connection. Verified product information states that multiple devices can operate simultaneously, although only one device from a specific group may be active at a time. That distinction is essential when defining slot arbitration and software behavior, since a host may see several inserted cards without every card receiving independent concurrent bus access. The 128-TQFP footprint and numerous flash-related signals require careful layout review, and an obsolete lifecycle makes careful sourcing particularly important.
Recomendado
Legacy Digital Camera Interface
The USB2223-NU-02 can support a legacy digital-camera or media-transfer product that uses one of its supported flash formats rather than modern USB mass-storage silicon. Its USB 2.0 controller function connects the embedded system to a USB host, while the parallel interface manages the removable flash device. Using an existing USB2223-NU-02 board can avoid redesign when its 128-TQFP footprint, media support, and firmware expectations already match the target product. For a new camera platform, however, the obsolete status, restricted availability, and unverified drop-in replacements make this a legacy-only choice.
Recomendado
USB Flash Storage Adapter
For a USB-to-flash storage adapter, the USB2223-NU-02 provides a dedicated USB 2.0 controller with parallel access to compatible flash media. The verified 3 V to 3.6 V supply range permits integration with standard 3.3 V systems, while the 15 mA listed operating current provides a baseline for rail planning. Actual design dissipation and thermal behavior are not specified in the supplied data, so they must be obtained from the manufacturer documentation. This use case is best suited to sustaining legacy equipment because the part is obsolete and no verified pin-compatible modern replacement was established.
Recomendado
Embedded USB Service Interface
An embedded service port can use the USB2223-NU-02 when the system must expose a USB 2.0 connection to a supported flash-media device. The controller concentrates the USB-to-media interface function in a single 128-TQFP component, which can simplify a board already designed around that footprint. High-speed USB routing, flash-bus integrity, clocking, and exposed-pad or thermal requirements must still be validated against the complete Microchip documentation. Since the lifecycle is obsolete, an engineered alternative may require an adapter board or a full redesign rather than a like-for-like footprint substitution.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para USB2223-NU-02 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 128-TQFP (14 x 20 mm) |
| Brand | Microchip Technology |
| Controller Type | USB 2.0 Controller |
| USB Protocol | USB 2.0 |
| Interface | Parallel/Serial |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Supply Current | — |
| Supported Flash Media | SmartMedia, xD Picture Card, Memory Stick, Secure Digital, CompactFlash |
| Lifecycle Status | Obsolete |
| Number of Pins | 128 pins |
Principais diferenciais
- Supports five named legacy flash-media families (vs USB2223-NE-03)
- Defined multi-device operating behavior (vs USB97C223-NU)
- Integrated USB 2.0 flash-media controller function (vs USB2223-NE-03)
Notas de projeto
Do not release the PCB land pattern from distributor metadata alone. The supplied data identifies a 128-TQFP, 14 x 20 mm package, but it does not include the exact pin numbering, lead span, courtyard, or thermal-pad configuration. Download the manufacturer package drawing and verify the footprint mechanically and electrically against the selected distributor's stated package designation before fabrication.
Route the USB differential pair as a controlled-impedance pair over a continuous reference plane and minimize the distance from the controller to the connector, protection devices, and required series components. Keep flash-media traces short and away from high-current switching nodes. Exact impedance, topology, and timing values are not included in the supplied data and must come from the complete datasheet and USB design guidance.
Do not assume that any USB controller with a similar package is a drop-in substitute. The USB2223-NE-03 and USB97C223-NU appear only in comparison results, and pin, flash-bus, firmware, and electrical compatibility were not verified. A replacement should be approved only after comparing every pin, USB behavior, media protocol, supply requirement, clock source, and package land pattern.
The verified operating range is 3 V to 3.6 V, and the listed operating supply current is 15 mA. Those values are the only quantitative power information supplied, so they should not be used as a complete worst-case budget for an external flash card. Include card insertion transients, inrush, regulators, and any required pull-up loads when sizing the power system.
Informações de conformidade
The supplied web data does not state RoHS, REACH, halogen-free, lead-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because the part is a legacy general-purpose interface controller rather than an automotive-qualified device in the supplied data; no automotive qualification claim is supported.
