CY7C68300B-56PVXC

The CY7C68300B-56PVXC is a fixed-function USB 2.0 to ATA/ATAPI bridge controller from Cypress Semiconductor, part of the EZ-USB AT2LP family. This device integrates a USB 2.0 high-speed transceiver and serial interface engine with an ATA/ATAPI host interface, supporting PIO and multiword DMA transfer modes for seamless communication with mass storage peripherals. It operates as a complete USB Mass Storage Class Bulk-Only Transport solution without requiring external firmware development, which simplifies design cycles. Key features include low-power suspend modes, an integrated 8051-free architecture, and support for up to two ATA/ATAPI devices. The 56-pin SSOP package offers a compact footprint suited for space-constrained board layouts, while the commercial temperature range (0°C to 70°C) defines its operational environment.

Typical applications include external hard drive enclosures, optical disc drives, and industrial data acquisition systems where USB connectivity to ATA solid-state or rotating media is required. In aerospace and defense test equipment, this bridge is often used in legacy maintenance interfaces and ruggedized storage modules that rely on proven USB-to-ATA conversion. Procurement engineers should evaluate the lifecycle status of the CY7C68300B series, as Cypress (now part of Infineon) has designated this family as a mature device; availability may be channel-limited, and new designs should consider roadmaps for long-term support. The commercial-grade suffix confirms standard temperature tolerances, so extended-range equivalents or alternate qualified components may be needed for high-reliability avionics or military systems subject to wider thermal extremes.