Infineon Technologies CY7C64714-100AXC

Overview

CY7C64714-100AXC from Cypress Semiconductor is a full-speed USB 2.0 peripheral controller integrating an enhanced 8051 microcontroller, USB transceiver, serial interface engine (SIE), and General Programmable Interface (GPIF) in a single 100-pin TQFP package. It delivers 48-MHz 8051 operation, 16 KB on-chip RAM, four programmable BULK/INTERRUPT/ISOCHRONOUS endpoints with double/triple/quad buffering, and supports bus-powered operation at ≤65 mA. It is widely used in memory card readers and ATA interface adapters.

For engineers reviewing the CY7C64714-100AXC datasheet, CY7C64714-100AXC pinout, CY7C64714-100AXC application, or CY7C64714-100AXC equivalent, key selection criteria include its ReNumeration™ capability, 8-/16-bit parallel FIFO interface, I²C master support at 100/400 kHz, vectored USB/FIFO interrupts, and software-downloaded firmware via USB.

Technical Context

The CY7C64714-100AXC implements a hardware-accelerated Smart SIE that offloads USB protocol handling-including SETUP/DATA phase separation and automatic PID generation-freeing the 8051 core for application logic. Its GPIF supports fully programmable waveform descriptors with up to six CTL outputs and six RDY inputs, enabling glueless interfacing to ATA, EPP, PCMCIA, and DSP buses.

It features dual USARTs operating at 230 KBaud with <1% error across 12/24/48 MHz clock modes, an I²C master only (no slave mode), and a reset sequence requiring ≥5 ms stabilization when using a 24-MHz crystal. The device supports three boot methods: internal descriptors, EEPROM-loaded VID/PID/DID (0xC0), or full firmware download (0xC2).

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), 0.5 mm pitch, RoHS-compliant (lead-free "AXC" suffix).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB peripheral controller applications.

Compared with CY7C64714-100AXC, the CY7C68013A offers higher bandwidth and larger FIFOs but increases system cost and complexity, while the FT232HL simplifies design for serial-only use cases but eliminates all programmable interface and real-time control capabilities.

Availability

CY7C64714-100AXC is available at Aetrix Electronics and suitable for memory card readers, DSL modem interfaces, and legacy device converters requiring stable component supply, long-lifecycle support, and consistent RoHS-compliant packaging.

Supply support for CY7C64714-100AXC 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, PSoC, memory, and programmable analog/digital solutions for embedded systems.

The EZ-USB FX1 product line was designed specifically for cost-sensitive, full-speed USB peripheral applications requiring embedded intelligence, flexible firmware-upgradable identity, and glueless parallel interface bridging-targeting consumer, networking, and industrial peripherals.

FAQ

What boot methods does CY7C64714-100AXC support?

The CY7C64714-100AXC supports three boot modes: (1) internal USB descriptors (default VID/PID 0x04B4/0x6473), (2) EEPROM-based descriptor loading (first byte 0xC0), and (3) full firmware download into RAM (first byte 0xC2). Boot source is detected automatically during power-up by checking I²C lines for a connected EEPROM with valid signature bytes.

Does CY7C64714-100AXC support high-speed USB (480 Mbps)?

No. The CY7C64714-100AXC is a full-speed USB 2.0 device supporting only 12 Mbps signaling. It does not implement high-speed PHY circuitry or chirp detection logic. High-speed capability requires the FX2LP family (e.g., CY7C68013A), which shares pin and firmware compatibility but adds dedicated high-speed transceivers.

Can the GPIF interface operate synchronously with an external clock?

Yes. The GPIF supports both internally generated and externally supplied clocks. When using an external clock, the CLKIN pin accepts frequencies up to 48 MHz, and the GPIF waveform timing is referenced to that clock-enabling precise synchronization with ASICs, FPGAs, or DSPs operating on shared timing domains.

Is I²C functionality available in slave mode on CY7C64714-100AXC?

No. The I²C controller in CY7C64714-100AXC operates in master mode only, supporting 100 kHz and 400 kHz bus speeds. It cannot act as an I²C slave device. This limitation applies to both EEPROM boot configuration and runtime communication; no SFR or firmware mechanism enables slave-mode operation.