CY7C68320-56LFXC

Controllers Overview

The CY7C68320-56LFXC is a fixed-function USB 2.0 to ATA/ATAPI bridge integrated circuit manufactured by Infineon Technologies under the EZ-USB AT2LP series. It operates at high-speed (480 Mbps) or full-speed (12 Mbps) and complies with the USB Mass Storage Class Bulk-Only Transport Specification. The device supports ATA/ATAPI-6 specifications, including PIO modes 0, 3, 4, multiword DMA mode 2, and UDMA modes 2, 3, 4. It features low-power 3.3V operation and utilizes a 4-Kbyte FIFO buffer to maximize data transfer rates. The component is housed in a lead-free 56-pin QFN package.

Controllers Feature Summary

• Fixed-function mass storage device requiring no firmware code
• Supports self-powered and USB bus-powered configurations
• Enables HID interface or custom GPIOs for button controls and notifications
• Provides compatibility with native USB mass storage class drivers

Controllers Applications

• Bus powered CompactFlash readers
• Portable USB hard drives
• CD-ROM and DVD drives
• MP3 and personal media players
• Tape drives and personal video recorders

Controllers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required 56-pin QFN package configuration. Ensure compliance with RoHS directives and check for any relevant product discontinuance notices prior to finalizing procurement plans.

Controllers Selection Notes

Select this model for designs requiring a dedicated USB-to-ATA bridge without firmware development. The CY7C68320 variant is specifically optimized for self-powered and bus-powered applications. Verify that the design accommodates the necessary external serial EEPROM for storing USB descriptors and device configuration data.

Controllers Part Context

This component belongs to the EZ-USB AT2LP family, which serves as a cost-effective alternative to previous Cypress solutions like the ISD-300A1 and EZ-USB AT2. While the CY7C68300B offers backward pin-compatibility with the older CY7C68300A, the CY7C68320 adds support for HID interfaces and GPIOs, making it suitable for advanced user interaction features in portable storage devices.

Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.