CY7C68301C-56LTXC

Controllers Overview

The CY7C68301C-56LTXC is a fixed-function USB 2.0 to ATA/ATAPI bridge controller from the EZ-USB AT2LP family, manufactured by Infineon Technologies (formerly Cypress). It operates in a 56-pin QFN package and supports High Speed (480 Mbps) and Full Speed (12 Mbps) data rates. The device provides a hardware bridge for one or two ATA/ATAPI mass storage devices without requiring firmware. Key electrical parameters include a 3.3V supply voltage, a 24 MHz crystal requirement, and a 4 KB FIFO buffer. It complies with USB Mass Storage Class Bulk-Only Transport specifications.

Controllers Feature Summary

• Fixed-function architecture eliminates the need for custom firmware development
• Supports both self-powered and bus-powered operational modes
• Compatible with native USB Mass Storage Class drivers on standard operating systems
• Includes backward compatibility mode for legacy EZ-USB AT2 designs

Controllers Applications

• Bus-powered CompactFlash readers
• Portable USB hard drive enclosures
• CD-ROM and DVD-RAM 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 the specific ordering suffix matches the required package type and temperature range. Check for end-of-life status as this series may be discontinued. Ensure compliance with RoHS directives if applicable to your region. Request original datasheets to validate pinout configurations before integration.

Controllers Selection Notes

Select this model when a firmware-free solution for ATA/ATAPI bridging is required. Choose the CY7C68301C variant specifically for battery-powered applications due to its power optimization features. Ensure the design accommodates the 56-pin QFN footprint. Verify that the host system supports USB 2.0 High Speed protocols for optimal performance. Consider the CY7C68321C if GPIO functionality is needed for external controls.

Controllers Part Context

This component belongs to the EZ-USB AT2LP family, designed to replace older Cypress ISD-300A1 and EZ-USB AT2 controllers. It offers improved power efficiency and cost reduction for mass storage interfaces. The CY7C68301C is distinct from the CY7C68300C by being optimized for battery-powered designs, whereas the CY7C68300C targets self and bus-powered configurations.

Controllers Replacement Considerations

The CY7C68300A can be replaced using the backward compatibility mode of the CY7C68301C. Program the EEPROM with the CY7C68300A signature to enable pin-for-pin compatibility. No board layout changes are typically required for migration. Consult Cypress application notes for detailed migration procedures.