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Infineon Technologies CY7C68300B-56LFXC
- Part No.:
- CY7C68300B-56LFXC
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
CY7C68300B-56LFXC.pdf
- Description:
- IC USB 2.0 BRIDGE BULK 56VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
CY7C68300B-56LFXC from Cypress Semiconductor is a fixed-function USB 2.0 to ATA/ATAPI-6 bridge IC supporting high-speed (480 Mbps) and full-speed (12 Mbps) operation, 48-bit addressing for large drives, and ATA PIO/DMA/UDMA modes (0,3,4 / 2 / 2–4). It enables bus-powered CompactFlash readers and portable USB hard drives with integrated 4-Kbyte FIFO and I²C-configurable EEPROM.
For engineers reviewing the CY7C68300B-56LFXC datasheet, CY7C68300B-56LFXC pinout, CY7C68300B-56LFXC application, or CY7C68300B-56LFXC equivalent, key selection criteria include ATA/ATAPI-6 compliance, dual power mode support (self- and bus-powered), Hi-Z ATA bus sharing capability, and backward compatibility with CY7C68300A designs via EEPROM-controlled pinout selection.
Technical Context
The device implements a dedicated hardware bridge without firmware requirement, using a Smart USB FS/HS Engine and PLL-synchronized 24 MHz crystal interface. Its ATA logic supports master/slave or CompactFlash-only configurations with IRQ signal handling and ATACB-based command translation.
Initialization is fully configurable via external serial EEPROM, enabling automatic ATA/ATAPI device enumeration and boot support via Mode Page 5. The 4-Kbyte FIFO buffers data transfers to minimize seek-time penalties during bulk transfers between USB and ATA domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed | High-speed (480 Mbps) and full-speed (12 Mbps) compliant per USB 2.0 spec (TID# 40460273) |
| ATA Interface | Complies with ATA/ATAPI-6 spec; supports PIO 0/3/4, multiword DMA 2, UDMA 2/3/4 |
| Addressing | 48-bit LBA addressing for drives >137 GB |
| FIFO Size | 4-Kbyte on-chip buffer to absorb ATA seek latency and sustain bulk transfer throughput |
| Power Modes | Self-powered and USB bus-powered operation enabled by VBUS_ATA_ENABLE and PWR500# control |
| Configuration | External I²C EEPROM stores USB descriptors and enables CY7C68300A pinout compatibility mode |
| Bus Sharing | ATA_EN (DD8) places ATA bus in high-impedance state to allow coexistence with IEEE-1394 or MP3 decoder controllers |
Pinout & Package
Package: 56-pin SSOP (lead-free, RoHS-compliant), 3.3 V nominal supply, 24 MHz crystal interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DD0–DD15 | ATA Data Bus | 16-bit bidirectional parallel data path for ATA/ATAPI transfers; Hi-Z when ATA_EN inactive |
| DIOR#, DIOW#, DMACK# | ATA Control Signals | Active-low strobes for read/write acknowledge; CMOS-driven, compatible with standard ATA timing |
| IORDY, DMARQ | ATA Status/Request | Input signals indicating device readiness and DMA request; used for flow control and burst arbitration |
| ATA_EN (DD8) | ATA Interface Enable | Asserted to activate ATA bus; when deasserted, places all ATA pins in high-impedance for shared-bus operation |
| DPLUS / DMINUS | USB Differential Pair | Direct connection to USB host/hub; requires 27 Ω series termination per signal per USB 2.0 spec |
| SCL / SDA | I²C Configuration Interface | Loads USB descriptors and configuration from external EEPROM at power-up; supports runtime reconfiguration |
| PWR500# | VBUS Power Valid Indicator | Active-low signal confirming stable VBUS supply in bus-powered designs; used for power sequencing and safety logic |
Key Features
| Feature | Design Value |
|---|---|
| No firmware required | Fixed-function silicon eliminates development time, certification risk, and field update complexity |
| Backward compatibility mode | EEPROM-configurable pinout allows drop-in replacement of CY7C68300A in legacy designs |
| Hi-Z ATA bus control | Enables co-location with other ATA controllers (e.g., IEEE-1394 bridges) on shared physical bus |
| ATA security & DRM support | Supports ATA password protection and ATAPI VPD page retrieval for Digital Rights Management compliance |
| Manufacturing test interface | Full board-level functional test via USB port without requiring ATA device attachment |
Applications
| CompactFlash Reader | Portable USB Hard Drive |
|---|---|
Use Scenario: External CF card reader for digital cameras and industrial logging devices. IC Role / Device Role / Timing Role: USB-to-ATA bridge translating host USB Mass Storage Class BOT commands into native ATA protocol for CF Type I/II cards. Use Value: Enables bus-powered operation with no external power adapter; supports CF hot-swap and 48-bit LBA for >128 GB cards. | Use Scenario: Battery-backed or desktop-attached 2.5-inch SATA-to-USB adapters (via ATA bridge). IC Role / Device Role / Timing Role: Fixed-function bridge managing UDMA Mode 4 transfers (66 MB/s) while maintaining USB 2.0 bulk pipe synchronization. Use Value: Eliminates need for custom firmware; reduces BOM cost vs. microcontroller-based solutions; certified USB Mass Storage Class compliance ensures plug-and-play driver support. |
| DVD±R/W External Enclosure | Personal Media Player Docking Station |
Use Scenario: USB-connected external DVD burner enclosure supporting CD-R/W, DVD-RAM, and DVD±R/W media. IC Role / Device Role / Timing Role: ATA/ATAPI-6 compliant controller handling ATAPI packet commands, media change detection, and mode page 5 boot support. Use Value: Native Windows/Mac OS X driver compatibility; supports ATAPI serial number VPD for DRM-aware content playback systems. | Use Scenario: Docking cradle for MP3 players or personal video recorders with IDE-based storage. IC Role / Device Role / Timing Role: Bridge enabling USB host access to internal ATA flash or microdrive while preserving device's native playback firmware. Use Value: Allows fast file sync without interrupting player operation; Hi-Z ATA bus mode permits simultaneous access by player SoC and USB host. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-ATA bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C68301B-56LFXC | Identical functionality but optimized for battery-powered designs; lower quiescent current in suspend mode | Better suited for handheld CF readers where battery life is critical; same pinout and EEPROM config | Select when system power budget mandates <100 µA suspend current and no self-power option exists |
| CY7C68320-56LFXC | Adds GPIO0–GPIO2 and HID interface; lacks CY7C68300A compatibility mode; uses different EEPROM layout | Enables button-triggered backup or LED status feedback; not pin-compatible with CY7C68300A | Select when user interaction features (e.g., one-button sync) are required and legacy compatibility is unnecessary |
Compared with CY7C68301B-56LFXC, the CY7C68300B-56LFXC offers identical ATA/USB performance but higher active power draw and no low-power suspend optimization; compared with CY7C68320-56LFXC, it lacks GPIO/HID but provides guaranteed CY7C68300A drop-in replacement capability and simpler EEPROM configuration.
Availability
CY7C68300B-56LFXC is available at Aetrix Electronics and suitable for CompactFlash readers, portable USB hard drives, DVD±R/W enclosures, and personal media player docking stations requiring stable component supply across industrial and consumer electronics production cycles.
Supply support for CY7C68300B-56LFXC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in USB, memory, and programmable logic solutions for embedded systems.
The EZ-USB AT2LP product line delivers certified, fixed-function USB mass storage bridges targeting cost-sensitive, high-volume peripheral designs requiring zero-firmware integration and USB-IF certification out-of-box.
FAQ
What power supply requirements does CY7C68300B-56LFXC have?
The device operates exclusively from a 3.3 V ±10% supply, with separate AVCC and AGND pins requiring low-noise analog routing. It supports both self-powered (external 3.3 V regulator) and USB bus-powered configurations via VBUS monitoring through PWR500# and VBUS_ATA_ENABLE signals. No 5 V or mixed-voltage operation is supported.
Does CY7C68300B-56LFXC require external firmware or driver development?
No. It is a fixed-function bridge with no firmware execution engine. All USB Mass Storage Class Bulk-Only Transport behavior is implemented in hardware. Standard OS drivers (Windows 98SE+, macOS X 1.1+) are sufficient; Cypress-provided drivers add optional features like enhanced diagnostics but are not required for basic operation.
Can CY7C68300B-56LFXC interface with SATA devices?
No. It supports only parallel ATA (PATA) and ATAPI interfaces per ATA/ATAPI-6 specification. SATA devices require a separate SATA-to-ATA bridge or native SATA controller; this IC lacks SATA PHY, link layer, or command translation for SATA protocols.
How is the CY7C68300B-56LFXC pinout configured for CY7C68300A compatibility?
At startup, the device reads byte 8 from the external I²C EEPROM. If bit 7 = 1, it enters CY7C68300A compatibility mode and maps pins per the legacy AT2 pinout (e.g., DA2 becomes VBUS_PWR_VALID). This mode is fully automatic and requires no external logic or strapping resistors.
CY7C68300B-56LFXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Bridge, USB to ATA
- Interface:
- ATA
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.15V ~ 3.45V
- Current - Supply:
- 50mA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 56-QFN (8x8)
- Grade:
- -
- Qualification:
- -
CY7C68300B-56LFXC FAQ
1.How can I place an order for CY7C68300B-56LFXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C68300B-56LFXC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY7C68300B-56LFXC reliable?
The price and inventory of CY7C68300B-56LFXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C68300B-56LFXC is usually 5 days.
3.What payment methods are accepted for CY7C68300B-56LFXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C68300B-56LFXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C68300B-56LFXC?
CY7C68300B-56LFXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C68300B-56LFXC order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY7C68300B-56LFXC?
For technical support, including CY7C68300B-56LFXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C68300B-56LFXC requirements.
6.How does Aetrix verify that CY7C68300B-56LFXC is sourced from the original manufacturer or authorized distributors?
All CY7C68300B-56LFXC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY7C68300B-56LFXC meets industry standards.
7.What is the process for return or replacement of CY7C68300B-56LFXC?
All CY7C68300B-56LFXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C68300B-56LFXC, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY7C68300B-56LFXC part is unused and in its original packaging.
Return procedure for CY7C68300B-56LFXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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