CY7C68300B-56PVXC USB 2.0 ATA Bridge | Infineon
料号： CY7C68300B-56PVXC ✗ 停产CY7C68300B-56PVXC 概述
A USB-to-ATA bridge is an interface controller that translates USB traffic into ATA and ATAPI commands, allowing storage devices designed for an embedded IDE or flash interface to connect through a USB host. Within the power-management IC hierarchy, this device belongs to the interface-controller and USB-bridge class rather than a voltage regulator or switching converter. It provides the protocol and electrical interface between a USB 2.0 host and a directly attached ATA/ATAPI storage device.
The principal features include USB 2.0 operation, fixed-function ATA and ATAPI bridging, one-device support, and CompactFlash compatibility. The ATA interface can also be placed in a high-impedance state, allowing the bus to be shared with another controller such as an IEEE 1394 device. This Hi-Z capability is useful in legacy portable systems where an internal storage bus must be arbitrated between multiple controllers. The 56-pin SSOP package is a legacy surface-mount format suited to established controller boards and adapter hardware.
The CY7C68300B/CY7C68301B device family provides a USB-to-ATA/ATAPI interface for embedded storage designs. Its 3.3 V-class operating range and 50 mA supply-current figure make it appropriate for systems already operating around 3.3 V. Unlike a general-purpose USB host controller, the EZ-USB AT2LP implementation is a fixed-function bridge, which simplifies host software support while limiting configuration flexibility compared with a programmable USB controller.
Typical applications include legacy industrial data-acquisition equipment, compact embedded storage systems, legacy portable computers, and USB-to-ATA or CompactFlash adapter boards. The bridge is particularly appropriate when an existing ATA or ATAPI device must be retained but exposed to a modern host through USB. Its Hi-Z ATA interface also supports designs in which another controller, including an IEEE 1394 interface, must share access to the same storage bus.
Designers should preserve the original 56-pin SSOP footprint, supply decoupling, and ATA signal routing when replacing an existing board. Because the product is obsolete, validate the ATA protocol behavior, BIOS or operating-system driver support, connector wiring, and USB high-speed signal integrity in the complete system. A footprint match alone does not guarantee that replacement USB enumeration, power management, or storage compatibility will be identical.
This page combines the device specifications, lifecycle status, sourcing guidance, and drop-in alternatives for the CY7C68300B-56PVXC. It also provides application-specific engineering context for USB-to-ATA bridges, CompactFlash systems, and legacy embedded storage controllers.
直接替换替代料： CY7C68300B-56PVXC ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： CY7C68300B-56PVXC （相同外形与封装尺寸） ——差异在于 Package.
CY7C68301B-56PVXC
✅ 直接替换联系询价
查看数据手册 →CY7C68300C-56PVXC
✅ 直接替换联系询价
查看数据手册 →CY7C68301C-56PVXC
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →CY7C68321B-56PVXC
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY7C68321C-56PVXC
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY7C68300B-56PVXC 规格参数
| Product Type | USB 2.0 to ATA/ATAPI bridge controller |
| Series | EZ-USB AT2LP |
| USB Protocol | USB 2.0 |
| ATA Interface | ATA and ATAPI |
| USB Port Support | 1 port |
| ATA or ATAPI Device Support | 1 device |
| CompactFlash Support | Supported |
| ATA Bus High-Impedance Mode | Supported |
| 工作电源电压 | 3.15 V to 3.45 V |
| Nominal Supply Voltage | 3.3 V |
| 电源电流 | 50 mA |
| 工作温度 | 0 °C to 70 °C |
| 封装 | 56-pin SSOP (56-BSSOP) |
| 安装类型 | Surface mount |
| 生命周期状态 | Obsolete |
CY7C68300B-56PVXC 56-pin ssop (56-bssop) 引脚配置指南
CY7C68300B-56PVXC（56-pin ssop (56-bssop) 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： CY7C68300B-56PVXC.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY7C68300B-56PVXC 适用于 6 应用s: Legacy USB-to-ATA Storage Adapter, CompactFlash Adapter Circuit, Legacy Industrial Data-Acquisition Equipment, Portable Computer Storage Retrofit, ATA Bus Sharing with IEEE 1394, Embedded USB Storage Controller.
Legacy USB-to-ATA Storage Adapter
The CY7C68300B-56PVXC fits a USB 2.0 to ATA adapter that exposes one ATA or ATAPI storage device to a host computer. Its fixed-function EZ-USB AT2LP architecture keeps the required controller logic in dedicated hardware rather than requiring a programmable USB engine. The 3.15 V to 3.45 V operating range suits a 3.3 V USB adapter design, while the ATA high-impedance capability supports bus arbitration when another controller must share the storage bus.
推荐
CompactFlash Adapter Circuit
The CY7C68300B-56PVXC is appropriate for a USB CompactFlash adapter because the EZ-USB AT2LP family supports CompactFlash alongside ATA and ATAPI devices. It bridges one USB port to one CompactFlash interface without requiring a separate programmable storage controller. The 50 mA supply-current specification helps define the local 3.3 V power budget, although the complete adapter must also account for the attached flash device and USB transceiver current.
推荐
Legacy Industrial Data-Acquisition Equipment
The CY7C68300B-56PVXC can preserve ATA-based data storage in legacy industrial equipment while adding a USB service or data-transfer connection. Its fixed-function USB 2.0 to ATA/ATAPI bridge suits controllers with established operating systems and drivers rather than newly programmable firmware platforms. The 0 °C to 70 °C commercial operating range supports room-temperature industrial service applications, but it should not be assumed suitable for extended-temperature factory environments without specific qualification.
推荐
Portable Computer Storage Retrofit
The CY7C68300B-56PVXC is useful in a legacy portable-computer design that retains an ATA or ATAPI device but needs a USB bridge. The ATA interface high-impedance function allows the storage bus to be shared with another controller such as an IEEE 1394 interface, a configuration found in older portable systems. Because the device is obsolete and limited to 0 °C to 70 °C, replacement activity is better suited to repair and extension of existing equipment than to new portable platforms.
推荐
ATA Bus Sharing with IEEE 1394
The CY7C68300B-56PVXC supports systems in which the ATA storage bus must be shared with an IEEE 1394 controller. Its ability to place the ATA interface in a high-impedance state prevents the USB bridge from driving the bus while the other controller has ownership. Correct arbitration in host firmware is essential to avoid signal contention, and the complete board should be checked for ATA direction-control timing and USB signal integrity before deployment.
推荐
Embedded USB Storage Controller
The CY7C68300B-56PVXC serves as an embedded USB storage controller when an established product needs a dedicated USB-to-ATA path. Its fixed-function implementation reduces firmware complexity compared with programmable USB controller architectures and supports ATA, ATAPI, and CompactFlash devices. For a new embedded design, verify USB class-driver support, ATA transfer-mode expectations, bus-master arbitration, and operating-temperature requirements before committing to an obsolete controller.
推荐
推荐产品汇总
工程参考数据： CY7C68300B-56PVXC ——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 | CY7C68301B-56PVXC | CY7C68300C-56PVXC | CY7C68301C-56PVXC | CY7C68321B-56PVXC | CY7C68321C-56PVXC |
|---|---|---|---|---|---|---|
| Package | 56-pin SSOP (56-BSSOP) | 56-pin SSOP (56-BSSOP) | 56-pin SSOP (56-BSSOP) | 56-pin SSOP (56-BSSOP) | 56-pin SSOP (56-BSSOP) | 56-pin SSOP (56-BSSOP) |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Function | USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge |
| USB Standard | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
关键差异点
- Direct EZ-USB AT2LP family continuity （对比 CY7C68321B-56PVXC)
- ATA high-impedance bus sharing （对比 CY7C68300C-56PVXC)
- Single-device bridge simplicity （对比 CY7C68301B-56PVXC)
设计说明
Treat the 56-pin SSOP footprint as the starting point, not the complete qualification for a replacement. Verify pin functions, ATA device-count requirements, firmware expectations, and USB enumeration behavior against the manufacturer datasheet. The CY7C68321 family offers different multi-device ATA arrangements, while the CY7C68300C and CY7C68301C parts use different silicon or family suffixes. Do not populate a cross-family part solely because its package drawing matches.
Route USB and ATA signals as controlled-impedance interconnects where the board stack-up permits, keep the bridge and connector connections short, and avoid routing ATA data signals beneath noisy switching-converter regions. The ATA high-impedance function requires correct control sequencing so the bridge releases the bus before another controller drives it. Validate signal timing and contention margins at the system level rather than relying on nominal package compatibility alone.
Design the 3.3 V rail around the listed 50 mA bridge supply current plus the attached ATA, CompactFlash, USB transceiver, and termination loads. Place bypass capacitors close to the supply and ground pins using the pin-description table and reference circuit in the manufacturer datasheet. Confirm startup behavior, USB bus-powered current limits, and the point at which the ATA device and USB transceiver begin operating relative to system power sequencing.
合规信息
The device is an obsolete commercial-temperature USB-to-ATA bridge controller. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations are not stated in the product information used for this page; AEC-Q100 is treated as not applicable to this non-automotive interface controller.
