Infineon Technologies CY7C68321-100AXC

Mfr. Part

CY7C68321-100AXC

Manufacturer

Cypress Semiconductor (Infineon Technologies)

Y-IC is a quality distributor for Cypress/Infineon. We supply genuine parts, fast delivery, and expert support to help you pick the right product and solve integration issues.

Detailed Description

EZ-USB AT2LP USB 2.0 to ATA bridge IC in a 100-pin LQFP package. Converts high-speed USB 2.0 to ATA/ATAPI for legacy PATA hard drives and optical drives. Operates at 3.3 V with low power draw and commercial temperature range.

Key Features

USB 2.0 high-speed compliant (up to 480 Mbps)

Bridge function USB to ATA/ATAPI

Supply voltage 3.15 V to 3.45 V (typical 3.3 V)

Low operating current around 50 mA

Commercial temperature 0°C to 70°C

RoHS3 compliant lead-free construction

100-pin LQFP/TQFP package, 14 mm x 20 mm body

EZ-USB AT2LP series for mass-storage bridging

Standard USB protocol support

Proven Cypress/Infineon quality and ecosystem

Key Advantages

Simple, direct way to add USB to legacy ATA storage devices

Reduces BOM and engineering time vs. discrete solutions

Low power and low heat for compact enclosures

Stable, mature architecture widely deployed in external storage

Backed by Cypress/Infineon and supported by Y-IC’s sourcing and technical help

Packaging

Type: 100-LQFP / 100-TQFP

Body size: 14 mm x 20 mm

Pin count: 100 leads, quad flat package

Material: epoxy-molded plastic, RoHS3 lead-free plating

Supplier device package: 100-TQFP (14x20)

Thermal characteristics: low-power device; typical operation without heatsink in 0°C to 70°C ambient when mounted on standard PCB. Use good PCB copper for heat spreading. Refer to datasheet for detailed θJA and power dissipation guidance.

Electrical properties: 3.15 V to 3.45 V supply, ~50 mA supply current, USB 2.0 high-speed interface, ATA/ATAPI bus interface

Shipping package: Bag

Pin configuration: 100 pins arranged on four sides (consult datasheet for full pinout and signal mapping)

Lifecycle

Current availability depends on package and region. This AT2LP family is mature; check latest status before new designs.

Potential Cypress/Infineon family alternatives for similar functions may include other EZ-USB AT2LP variants of CY7C68321 and CY7C68320 with different package or suffix options. Availability varies; confirm details with Y-IC.

Functional (not pin-compatible) alternatives from other brands for USB 2.0 to PATA/ATAPI bridging include:

- JMicron JM20337 (USB 2.0 to IDE/SATA bridge)

- Genesys Logic GL811E (USB 2.0 to IDE)

- Prolific PL-3507 (USB 2.0 to IDE/ATAPI)

- Alcor Micro AU6391 family (USB storage bridge solutions)

Important note: These alternatives differ in pinouts, firmware, drivers, and performance. They are not drop-in replacements. For exact equivalents and the best-fit option, please contact Y-IC via our website and our sales team will guide you.

If you need lifecycle confirmation or exact cross-references, reach out to our sales team on the Y-IC website for up-to-date guidance.

Key Application Areas

External USB 2.0 PATA hard drive enclosures

USB optical drives (CD/DVD) using ATAPI

Legacy storage adapters and USB-to-IDE bridges

Docking stations and upgrade kits for older ATA devices

Industrial and test equipment needing USB access to ATA storage

Datasheet

Y-IC hosts the most authoritative datasheet and technical documents for CY7C68321-100AXC. Download the latest datasheet directly from this page to get electrical specs, timing, pinout, and design guidelines.

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