Key facts
- Brand
- Cypress
- Model
- CY7C68321
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-07
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Cypress EZ-USB AT2LP CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 Datasheet
The EZ-USB AT2LP bridge implements a fixed‑function USB 2.0 to ATA/ATAPI interface for mass‑storage devices. It supports high‑speed (480 Mbps) and full‑speed (12 Mbps) USB operation, two power modes (self‑powered or bus‑powered), and a range of ATA commands, security features, and BIOS boot support.
The document provides block diagrams, detailed pin descriptions for 56‑pin SSOP, 56‑pin QFN and 100‑pin TQFP packages, electrical characteristics such as supply voltage and current limits, package diagrams, and PCB layout recommendations for reliable high‑performance designs.
Cypress CY7C68321 specifications
| Supply Voltage (VCC) | 3.15 V – 3.45 V (typ 3.3 V) |
|---|---|
| USB High‑Speed Current | 50 mA – 85 mA |
| USB Full‑Speed Current | 35 mA – 65 mA |
| Suspend Current (connected) | 0.5 mA – 1.2 mA (CY7C68300B/CY7C68320) |
| Package Types | 56‑pin SSOP, 56‑pin QFN, 100‑pin TQFP |
Source: Cypress EZ-USB AT2LP CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 Datasheet
All Cypress CY7C68321 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What USB speeds does the EZ-USB AT2LP support?
It operates at high‑speed (480 Mbps) or full‑speed (12 Mbps) USB.
From: Cypress EZ-USB AT2LP CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 Datasheet
How many ATA/ATAPI devices can be connected to the bridge?
The bridge supports one or two ATA/ATAPI devices.
From: Cypress EZ-USB AT2LP CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 Datasheet
What power modes does the EZ‑USB AT2LP support?
It supports both self‑powered and USB bus‑powered operation.
From: Cypress CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 USB 2.0 to ATA/ATAPI Bridge Datasheet
How many ATA/ATAPI devices can be connected to the bridge?
The bridge can handle one or two ATA/ATAPI devices.
From: Cypress CY7C68300B/CY7C68301B/CY7C68320/CY7C68321 USB 2.0 to ATA/ATAPI Bridge Datasheet