CY7C68001-56LTXC USB 2.0 Controller | Cypress | 56-QFN
MPN: CY7C68001-56LTXC ✓ ActiveCY7C68001-56LTXC Overview
An EZ-USB interface device is a dedicated USB connectivity and protocol-controlling component. In the product hierarchy, it is an interface IC, a USB controller, and ultimately a semiconductor designed to simplify USB peripheral implementation. Unlike a general-purpose microcontroller with integrated USB, the CY7C68001-56LTXC provides a dedicated parallel interface that allows an external master to manage USB transactions and peripheral functions without implementing the complete USB protocol stack in the host processor.
The verified product information identifies USB 2.0 operation, full-speed and high-speed support, a 3.3 V operating supply, and a parallel interface to the external system. The package is a 56-pin QFN with an exposed pad and an 8 mm by 8 mm footprint. The device is also documented for Compact Flash and one ATA or ATAPI device, while its ATA interface can enter a high-impedance state so that the ATA bus may be shared with another controller such as IEEE 1394.
The SX2 architecture is useful when an existing digital subsystem needs a dedicated USB interface rather than direct software control of USB low-level signaling. USB 2.0 full-speed and high-speed operation provide compatibility with common USB hosts and peripherals, while the parallel external interface separates the host-facing data path from USB protocol handling. The available 3.3 V supply requirement makes board-level integration straightforward for systems designed around contemporary 3.3 V digital logic.
Typical applications include USB-to-ATA storage adapters, USB-to-Compact Flash readers, board-level manufacturing test fixtures, embedded USB peripherals, and systems using a microprocessor, DSP, ASIC, or FPGA as the external master. The exposed-pad QFN package supports compact PCB layouts, although correct thermal pad soldering and adequate copper are required for reliable heat dissipation.
Designers should verify the complete pin assignment and signal timing against the manufacturer datasheet before layout. The parallel interface requires careful routing, and USB differential pairs should be routed as controlled-impedance connections with minimal stubs. For ATA implementations, power-state transitions, bus ownership, and high-impedance behavior must be coordinated with the external master to prevent contention.
This page combines verified distributor identification, package and pricing information, pin-compatible substitution screening, application guidance, and practical implementation cautions. The comparison focuses on verified USB and packaging attributes while marking unreported electrical details for datasheet confirmation rather than estimating them.
Drop-in alternatives for CY7C68001-56LTXC — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY7C68001-56LTXC (same form factor and footprint) — differing in Product Type.
CY7C68001-56LFXC
✅ Drop-InContact for price
View Datasheet →CY7C68001-56LTXC Specifications
| Product Type | USB 2.0 full-speed and high-speed USB interface device |
| USB Specification | USB 2.0 |
| Supported USB Speeds | Full Speed and High Speed |
| External Host Interface | Parallel interface |
| Operating Supply Voltage | 3.3 V |
| Package Type | 56-pin QFN with exposed pad |
| Package Dimensions | 8 mm x 8 mm |
| Pin Count | 56 pins |
| Mounting Type | Surface mount |
| Supported Storage Interface | ATA and ATAPI |
| Compact Flash Support | Yes |
| Maximum ATA or ATAPI Devices | 1 device |
| ATA Interface High-Impedance Mode | Supported |
| Board-Level Manufacturing Test | Supported through the USB interface |
| External Master Compatibility | Standard microprocessors, DSPs, ASICs, and FPGAs |
CY7C68001-56LTXC 8 mm x 8 mm Pin Configuration Guide
Pin configuration for CY7C68001-56LTXC (8 mm x 8 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for CY7C68001-56LTXC.
Refer to the datasheet for full pin configuration.
Typical Applications
CY7C68001-56LTXC is suitable for 6 applications: USB-to-ATA Storage Adapter, USB-to-Compact Flash Reader, Board-Level Manufacturing Test Fixture, Embedded USB Peripheral, Shared ATA Bus Storage System, USB-to-Industrial Acquisition Interface.
USB-to-ATA Storage Adapter
The CY7C68001-56LTXC fits a USB-to-ATA adapter because it provides USB 2.0 full-speed and high-speed operation while supporting one ATA or ATAPI device. An external processor, DSP, ASIC, or FPGA can manage the parallel interface and storage commands without implementing the USB protocol directly. The 3.3 V device and 56-pin QFN exposed-pad package support compact adapter designs, provided the ATA power states, bus ownership, and high-impedance transitions are coordinated correctly.
Recommended
USB-to-Compact Flash Reader
The CY7C68001-56LTXC is appropriate for a Compact Flash reader because the manufacturer documentation identifies Compact Flash support alongside USB 2.0 full-speed and high-speed operation. The external master can use the device's parallel interface to manage media access and USB transfers. Implementation must account for Compact Flash insertion detection, card power control, signal direction, and the QFN exposed pad's thermal requirements, especially when both USB and memory-card activity create repeated switching load.
Recommended
Board-Level Manufacturing Test Fixture
The CY7C68001-56LTXC supports board-level manufacturing testing through its USB interface, allowing a production fixture to communicate with a controller, DSP, ASIC, or FPGA under test. USB 2.0 full-speed and high-speed operation provides a standard connection to test equipment, while the parallel interface keeps the SX2 device as the dedicated protocol-handling element. Fixture designers should isolate the power rails, define safe initialization states, and verify timing margins for the board being tested.
Recommended
Embedded USB Peripheral
The CY7C68001-56LTXC can add a dedicated USB 2.0 port to an embedded peripheral built around a microprocessor, DSP, ASIC, or FPGA. The parallel interface allows the existing master to retain control of application behavior while the SX2 device manages USB-facing communication. This is useful when the primary processor does not provide a suitable USB controller or when the product requires a dedicated high-speed interface alongside multiple internal buses.
Recommended
Shared ATA Bus Storage System
The CY7C68001-56LTXC is suitable for a shared ATA bus because its interface supports a high-impedance state, allowing another controller such as an IEEE 1394 controller to use the bus. The external master must enforce ownership and prevent simultaneous driving of the ATA signals. USB 2.0 transfer control and ATA protocol handling remain separate functions, while the 3.3 V supply and 56-QFN package simplify integration into a compact storage subsystem.
Recommended
USB-to-Industrial Acquisition Interface
The CY7C68001-56LTXC can serve as the USB-facing element in an industrial acquisition system whose acquisition engine is implemented in an FPGA, ASIC, or DSP. The parallel interface provides a direct connection to the processing engine, and USB 2.0 full-speed and high-speed modes connect the assembly to a host computer. Deployment should include robust grounding, controlled-impedance USB routing, board-level testing, and thermal design that fully attaches the 56-QFN exposed pad.
Recommended
Recommended Products Summary
Engineering reference data for CY7C68001-56LTXC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY7C68001-56LFXC |
|---|---|---|
| Product Type | EZ-USB SX2 USB interface device | Functionally similar USB interface device |
| Brand | Infineon Technologies | Infineon Technologies |
| Package | 56-QFN EP (8x8) | 56-QFN EP |
| USB Specification | USB 2.0 | USB 2.0 |
| Supported USB Speeds | Full Speed and High Speed | Full Speed and High Speed |
| External Interface | Parallel interface | Parallel interface |
| Operating Supply Voltage | 3.3 V | 3.3 V |
| ATA and ATAPI Support | One ATA or ATAPI device | Functionally consistent according to verified comparison |
Key Differentiators
- Dedicated USB 2.0 interface rather than a general-purpose USB microcontroller (vs AT90USB647-MUR)
- High-speed and full-speed USB operation in a dedicated SX2 interface (vs CY7C68001-56LFXC)
- Integrated storage-bus management (vs CP2102N-A01-GQFN20R)
- External-master flexibility (vs STM32F429NIH6TR)
Design Notes
Place the CY7C68001-56LTXC close to the external master and USB connector, and route the USB differential pair as a controlled-impedance pair with symmetrical geometry and minimal stubs. The exposed pad must be connected to the PCB ground plane using the manufacturer's recommended via pattern. Confirm the footprint dimensions against the 56-QFN 8 mm by 8 mm datasheet drawing before releasing artwork.
Decouple the 3.3 V supply close to the device with the capacitance and voltage ratings specified by the manufacturer datasheet. Because the parallel interface connects to an external master, define power-up states so that neither the master nor the SX2 device drives an attached bus into an invalid condition. ATA and Compact Flash power rails should be controlled separately and brought into a defined state before the storage bus is enabled.
Do not treat a shared 56-QFN package as proof of unconditional drop-in compatibility. The verified CY7C68001-56LFXC comparison notes functional similarity but also possible parameter and circuit-structure differences. Before substitution, compare the complete pin table, operating limits, timing, USB electrical requirements, exposed-pad connection, and absolute maximum ratings. Update the BOM only after the manufacturer documents confirm the replacement is acceptable.
The exposed pad is the principal thermal path and should be soldered according to the manufacturer land pattern, using compliant vias that connect the pad to the opposite copper layer. Use surrounding ground copper to spread heat while preserving USB return-path continuity. Thermal performance must be evaluated at the maximum expected operating temperature and the worst-case USB, ATA, and logic activity, because the verified data does not provide a numerical junction-temperature limit.
Compliance Information
The verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because this is an interface IC rather than an identified automotive-qualified device; no automotive qualification claim was provided.
