CY7C68301B-56PVXC

Controllers Overview

The CY7C68301B-56PVXC is a fixed-function USB 2.0 to ATA/ATAPI bridge IC from the EZ-USB AT2LP series, manufactured by Cypress Semiconductor Corp. It operates in a 56-pin SSOP package and supports high-speed (480 Mbps) and full-speed (12 Mbps) USB signaling. The device complies with the USB Mass Storage Class Bulk-Only Transport Specification and ATA/ATAPI-6 standards. It requires a 3.3V power supply within the range of 3.15V to 3.45V and draws approximately 50mA during operation. Designed for battery-powered applications, it supports PIO modes 0, 3, 4, Multiword DMA mode 2, and UDMA modes 2, 3, and 4.

Controllers Feature Summary

• Fixed-function mass storage bridge requiring no firmware code
• Supports both self-powered and USB bus-powered configurations
• Compatible with native USB mass storage class drivers
• Enables ATA interface sharing via high-impedance state

Controllers Applications

• Bus-powered CompactFlash readers
• Portable USB hard drives
• MP3 players and personal media players
• CD-ROM and DVD drive enclosures

Controllers Procurement Notes

Verify component authenticity through authorized distributors or certified secondary market suppliers like Rochester Electronics. Confirm RoHS3 compliance status and check for obsolescence notices, as this part may be discontinued. Ensure the specific 56-pin SSOP variant matches the design requirements before procurement.

Controllers Selection Notes

Select the CY7C68301B variant specifically for battery-powered designs due to its optimized power characteristics compared to the CY7C68300B. Ensure the design utilizes a 56-pin SSOP footprint. Verify that the external EEPROM configuration supports the required USB descriptors and ATA command sets for the target storage devices.

Controllers Part Context

This component belongs to the EZ-USB AT2LP family, which serves as a cost-effective replacement for legacy parts like the ISD-300A1 and EZ-USB AT2. It provides a pin-compatible upgrade path for existing designs while offering enhanced features such as UDMA support and flexible power management options for modern portable storage solutions.

Controllers Replacement Considerations

Public confirmed substitute part numbers include CY7C68300B-56PVXC for self/bus-powered designs and CY7C68301C-56LFXC for QFN package alternatives. Verify backward compatibility with CY7C68300A if migrating from older EZ-USB AT2 designs.