CY7C68014A-56LFXC - 8051 High-Speed USB Controller | Infineon
MPN: CY7C68014A-56LFXC ✗ End of LifeCY7C68014A-56LFXC Overview
An EZ-USB FX2LP is a specialized USB interface controller within the broader microcontroller and USB interface IC hierarchy. Its integrated 8051 core allows endpoint and transfer behavior to be configured through firmware, while the address/data bus can connect external memory or companion logic when a design needs more storage or peripheral integration than the internal resources provide. Unlike a fixed-function USB interface, a ROMless controller allows product-specific USB behavior to be implemented in system firmware.
The principal verified characteristics are the 8051 CPU architecture, ROMless configuration, 16K RAM, 40 GPIOs, high-speed USB operation, and 56-VFQFN exposed-pad packaging. The exposed pad supports heat transfer from the device to the PCB, although the available data does not state a package dimension, pinout, clock rate, electrical limits, temperature range, or thermal resistance. Those values must be confirmed in the manufacturer datasheet before release of a production design.
The architecture is suited to USB peripheral equipment requiring deterministic firmware-controlled transfers, broad GPIO availability, and access to an external 8051-style address/data bus. The verified source material identifies high-speed USB peripheral control as a principal use, while another distributor listing categorizes the part as an application-specific microcontroller. These classifications reflect the device’s specialized role as a USB-connected control component rather than a general processor for embedded control.
Typical implementation areas include high-speed USB test and measurement equipment, data-acquisition adapters, printer and scanner interfaces, industrial peripheral controllers, USB-to-serial bridges, and legacy-port upgrade products. The 40 GPIOs can support control signals, indicators, interlocks, and peripheral chip selects, while the 16K RAM provides the stated internal working-memory resource. External memory may be used where firmware and working data exceed the internal capacity.
Board design should preserve the exposed-pad thermal path with an uninterrupted ground or power plane beneath the package, subject to the manufacturer’s land-pattern and assembly instructions. USB routing must follow the applicable high-speed layout guidance, including a controlled impedance path, continuous reference plane, minimized stubbing, and careful separation from noisy digital or switching nodes. Firmware should account for endpoint configuration, bus timing, and the function of every externally connected bus signal.
This product record combines verified distributor identification, lifecycle information from the Infineon community article, and the manufacturer-backed drop-in relationship for CY7C68014A-56LTXC. It also separates confirmed specifications from unresolved electrical and mechanical details, helping engineers evaluate the controller without mistaking datasheet gaps for guaranteed performance.
Drop-in alternatives for CY7C68014A-56LFXC — 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 CY7C68014A-56LFXC (same form factor and footprint).
CY7C68014A-56LTXC
✅ Drop-In📋 Reference alternative (not in catalog)
CY7C68014A-56LFXC Maximum Ratings & Electrical Characteristics
| Product Type | Application-specific USB microcontroller |
| Product Family | EZ-USB FX2LP |
| CPU Architecture | 8051 |
| Program Memory Configuration | ROMless |
| Internal RAM | 16K |
| General-Purpose I/O Count | 40 GPIO |
| External Processor Bus | 8051 address/data bus |
| USB Classification | High-speed USB peripheral controller |
| USB Generation | USB 2.0 |
| Package Type | 56-pin VFQFN with exposed pad |
| Mounting Type | Surface mount |
CY7C68014A-56LFXC 56-pin vfqfn with exposed pad Pin Configuration Guide
Pin configuration for CY7C68014A-56LFXC (56-pin vfqfn with exposed pad package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for CY7C68014A-56LFXC.
Refer to the datasheet for full pin configuration.
Typical Applications
CY7C68014A-56LFXC is suitable for 6 applications: High-Speed USB Test Equipment, Industrial USB Data Acquisition, USB Printer and Scanner Interface, USB-to-Serial Protocol Bridge, USB Connected Instrumentation, Battery-Powered USB Peripherals.
High-Speed USB Test Equipment
The CY7C68014A-56LFXC fits high-speed USB test equipment because it is identified as an EZ-USB FX2LP high-speed peripheral controller with an 8051 core and 16K RAM. Firmware can implement device-specific endpoint behavior, transfer handling, control commands, and status reporting without relying on a general-purpose processor. Its 40 GPIOs provide connections for trigger signals, status indicators, programmable relays, and interface control. The external 8051 address/data bus can also connect additional logic when the test system requires expanded storage or peripheral capability. Engineering validation should include USB compliance testing, bus timing checks, thermal review of the exposed pad, and confirmation that the production firmware fits the available external program-memory arrangement.
Recommended
Industrial USB Data Acquisition
The CY7C68014A-56LFXC is suitable for industrial USB data-acquisition front ends that require a dedicated peripheral controller and extensive control I/O. The verified 40-GPIO complement can connect sensor-enable lines, range selectors, converters, status lamps, and digital interlocks, while the 8051 architecture can execute acquisition sequencing and transfer firmware. An external memory connection through the 8051 address/data bus provides a path for larger buffers or configuration storage. In a factory environment, designers should isolate noisy analog and power-conversion circuits from the USB path, maintain a continuous reference plane, and use the exposed pad as part of a properly designed thermal strategy.
Recommended
USB Printer and Scanner Interface
The CY7C68014A-56LFXC can support legacy printer, scanner, or specialized peripheral interfaces that rely on a firmware-programmable USB controller. Its high-speed USB peripheral role allows endpoint and transfer behavior to be defined for the target protocol, while 40 GPIOs can operate paper sensors, buttons, motors, status indicators, and interlock signals. The 16K RAM can hold working buffers for command handling, and the address/data bus offers expansion when a design requires external memory or additional logic. Before adoption, engineers should verify USB enumeration behavior, legacy protocol timing, connector protection requirements, and firmware resource usage against the authoritative manufacturer datasheet.
Recommended
USB-to-Serial Protocol Bridge
The CY7C68014A-56LFXC is well suited to a USB-to-serial bridge because the 8051 core can implement serial framing, buffering, flow control, and USB endpoint logic in firmware. The 40 GPIOs provide multiple serial, control, and status lines, and the external address/data bus can connect additional buffer or protocol logic when required. For a new design, the related 8051 EZ-USB architecture offers a practical route to preserve an established USB peripheral design while upgrading the obsolete ordering code to CY7C68014A-56LTXC. Production validation should cover baud-rate tolerance, overrun recovery, short-circuit behavior on serial outputs, hot-plug handling, and enumeration across supported host operating systems.
Recommended
USB Connected Instrumentation
The CY7C68014A-56LFXC can serve as the USB-facing controller in programmable instrumentation where host commands, status reporting, and control signals must be coordinated reliably. The high-speed USB peripheral function supports communication with a PC or embedded host, while the 8051 address/data bus can extend the design when external memory or register logic is needed. The 40 GPIOs are useful for range selection, trigger routing, relay control, front-panel status, and safety interlocks. Instrument designs should separate analog signal paths from USB data routing, provide tested ESD protection at accessible connectors, validate enumeration and power consumption, and ensure that the exposed-pad thermal design remains effective in a sealed enclosure.
Recommended
Battery-Powered USB Peripherals
The CY7C68014A-56LFXC can be considered for battery-powered USB peripherals when its firmware-controlled USB behavior, 16K RAM, and 40 GPIOs meet the product requirements. Infineon’s related family information specifically describes FX2LP controllers for battery-powered applications, although the supplied records do not provide a complete current-consumption table for this exact ordering code. A battery product must therefore verify sleep behavior, operating current, USB attach behavior, and regulator efficiency against the manufacturer datasheet. The exposed-pad construction should be assessed for heat spreading without compromising the required compact layout, and production sourcing should preferably use CY7C68014A-56LTXC because it is the documented drop-in replacement.
Recommended
Recommended Products Summary
Engineering reference data for CY7C68014A-56LFXC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY7C68014A-56LTXC |
|---|---|---|
| Product Type | Application-specific ROMless USB microcontroller | Application-specific ROMless USB microcontroller |
| Brand | Infineon Technologies | Infineon Technologies |
| Package | 56-VFQFN Exposed Pad | 56-VFQFN Exposed Pad |
| CPU Architecture | 8051 | 8051 |
| Program Memory Configuration | ROMless | ROMless |
| Internal RAM | 16K | 16K |
| General-Purpose I/O | 40 GPIO | 40 GPIO |
| External Processor Bus | 8051 address/data bus | 8051 address/data bus |
| USB Classification | USB 2.0 high-speed USB peripheral controller | USB 2.0 high-speed USB peripheral controller |
| Lifecycle Status | Obsolete | Manufacturer-designated drop-in replacement |
| Pin Compatibility | Reference design | Pin-to-pin compatible |
| Functional Compatibility | Reference design | Function/feature compatible |
Key Differentiators
- Manufacturer-confirmed drop-in migration (vs CY7C68014A-56LTXC)
- Dedicated high-speed USB peripheral architecture (vs CY7C68014A-56LTXC)
- External expansion capability (vs CY7C68014A-56LTXC)
Design Notes
Route the high-speed USB interface as a controlled-impedance differential pair over a continuous reference plane. Avoid unnecessary vias and stubs, provide a short return path beneath the pair, and keep the connector, controller, and protection components close enough to minimize susceptibility to EMI. Verify the complete board stack-up and USB impedance with the fabricator; the supplied records do not specify a numeric impedance target or trace geometry, so those values must come from the controller datasheet and USB implementation guidance.
Treat the 56-VFQFN exposed pad as an intentional thermal and electrical land feature rather than an optional copper area. Follow the manufacturer’s exact footprint for exposed-pad dimensions, solder mask, and paste pattern, and provide a low-impedance connection beneath the package to distribute heat into the PCB. Because the verified data contains no package dimensions or thermal resistance, thermal adequacy cannot be calculated here; obtain those values and the recommended PCB copper geometry before production release.
Do not substitute a merely similar high-speed USB controller unless its pin mapping, firmware model, timing, power behavior, and package land pattern have all been verified. The manufacturer identifies CY7C68014A-56LTXC as the genuine drop-in replacement, making it the preferred migration for obsolete production demand. A second-source program should document firmware compatibility, USB enumeration behavior, exposed-pad assembly, and any differences in clocking or peripheral functionality rather than relying on the product-family name alone.
Before designing the power tree, verify the controller’s exact supply-voltage range, operating and suspend current, USB bus-powered current limit, and internal regulator behavior from the authoritative datasheet. Those values were not included in the supplied records. The external 8051 address/data bus may also support external program memory, so the system designer should budget regulator headroom, inrush, decoupling, and sequencing for the controller and any external bus devices without relying on unverified numerical assumptions.
Compliance Information
The verified records do not provide exact-MPN compliance declarations for RoHS, REACH, lead-free status, halogen-free status, or conflict-minerals status. AEC-Q100 is not applicable because this is an application-specific USB microcontroller rather than an automotive-qualified device; no AEC-Q100 qualification was stated.
