CY7C68300C-56LFXC

Controllers Overview

The CY7C68300C-56LFXC is a fixed-function USB 2.0 to ATA/ATAPI bridge controller from the EZ-USB AT2LP family, manufactured by Cypress Semiconductor Corp. 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, and 4, Multiword DMA Mode 2, and UDMA Modes 2, 3, and 4. It features a 4 KB FIFO buffer and requires an external serial EEPROM for configuration data. The component is housed in a 56-pin QFN package and operates on a single 3.3V power supply.

Controllers Feature Summary

• Fixed-function mass storage bridge requiring no firmware implementation
• Supports both self-powered and USB bus-powered operational modes
• Backward pin-compatible with the legacy CY7C68300A via backward compatibility mode
• Integrated support for ATA Security features and 48-bit addressing

Controllers Applications

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

Controllers Procurement Notes

Verify the specific suffix LFXC corresponds to the 56-pin QFN package variant. Confirm RoHS compliance status as per the latest datasheet revision. Check for obsolescence notices from Infineon Technologies, the current successor to Cypress Semiconductor. Ensure the design includes the required external I2C serial EEPROM for device descriptors.

Controllers Selection Notes

Select this model for designs requiring direct replacement of the CY7C68300A without PCB layout changes. Choose the QFN package for space-constrained applications. Verify that the host system supports standard USB Mass Storage Class drivers. Ensure the application does not require Low-Speed USB operation, as the device only supports Full and High Speed.

Controllers Part Context

This component belongs to the EZ-USB AT2LP series, which serves as a cost-effective alternative to previous generations like the ISD-300A1 and EZ-USB AT2. The AT2LP line simplifies USB mass storage design by integrating the USB transceiver, SIE, and ATA interface logic into a single fixed-function chip, eliminating the need for complex microcontroller programming.

Controllers Replacement Considerations

CY7C68300B-56LFXC