Infineon Technologies CY7C68034-56BAXC

Overview

CY7C68034-56BAXC from Cypress Semiconductor is a USB 2.0 NAND Flash controller IC integrating an enhanced 8051 core, USB 2.0 transceiver, Smart Serial Interface Engine (SIE), and General Programmable Interface (GPIF) in a single 56-pin QFN package. It supports high-speed (480 Mbps) and full-speed (12 Mbps) USB operation, delivers up to 96 MB/s burst data rate, and features 15 KB on-chip RAM with 8 KB default NAND firmware. Designed for battery-powered portable storage, it draws only 100 µA typical in suspend mode and supports 8-bit NAND Flash with SmartMedia-compatible ECC.

For engineers reviewing the CY7C68034-56BAXC datasheet, CY7C68034-56BAXC pinout, CY7C68034-56BAXC application, or CY7C68034-56BAXC equivalent, key selection criteria include its integrated GPIF waveform programmability, dual-mode FIFO (master/slave), 12 GPIOs with configurable CE# pins, and support for up to eight single-die or four dual-die NAND devices - critical for compact, low-power mass storage designs.

Technical Context

The CY7C68034 implements a firmware-driven USB mass storage controller architecture where the enhanced 8051 core executes NAND management firmware loaded from external flash at startup. Its Smart SIE handles USB protocol stack offloading, while the GPIF enables direct glueless interfacing to NAND, EPP, UTOPIA, or DSP buses via programmable waveform descriptors and multiple RDY/CTL signals.

It operates with a 24 MHz external crystal and internal PLL to derive 480 MHz for the USB PHY and selectable CPU clocks (12/24/48 MHz). The device includes four bulk/interrupt/isochronous endpoints with double/triple/quad buffering, plus one dedicated 64-byte endpoint, and integrates I²C master logic (100/400 kHz) and hardware ECC (1-bit correction / 2-bit detection per 256 bytes).

Key Specifications

Pinout & Package

Package: 56-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C68033-56BAXC and SL11H-1000-BZK, the CY7C68034-56BAXC uniquely combines USB 2.0 high-speed throughput, ultra-low-power suspend mode, and fully programmable NAND interface in a single chip - eliminating external logic while enabling compact, battery-operated mass storage solutions unattainable with either alternative.

Availability

CY7C68034-56BAXC is available at Aetrix Electronics and suitable for GPS data loggers, DVB video capture units, wireless presenters, and biometric USB drives requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for CY7C68034-56BAXC 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® NX2LP-Flex product line was designed specifically to replace discrete USB interface + NAND controller architectures with a single, firmware-flexible SoC - targeting portable, low-power, high-reliability mass storage applications.

FAQ

Does CY7C68034-56BAXC require an external crystal?

Yes. The device requires a 24 MHz ±100 ppm parallel-resonant fundamental-mode crystal connected to XTALIN/XTALOUT pins. This crystal drives the on-chip PLL to generate the 480 MHz USB PHY clock and scaled CPU clocks (12/24/48 MHz). Load capacitance must be 12 pF per side, including PCB trace capacitance.

Can the GPIF interface support custom NAND timing sequences?

Yes. The GPIF engine uses programmable waveform descriptors stored in on-chip RAM to define precise timing for NAND control signals (CLE, ALE, WE#, RE#) and data strobes. Developers can modify these descriptors to match specific NAND timing requirements (e.g., 30 ns vs. 100 ns tRC) without changing firmware logic.

What NAND Flash page sizes does CY7C68034-56BAXC support?

The device supports three NAND page sizes via compile-time firmware configuration: 512 bytes (up to 1 Gb density), 2 KB (up to 8 Gb), and 4 KB (up to 16 Gb). Page size selection determines ECC granularity and logical-to-physical mapping behavior - all implemented in the default firmware's NAND management layer.

Is the I²C interface available immediately after power-on?

No. The I²C controller is disabled at reset and becomes operational only after successful NAND initialization and firmware loading. This sequencing ensures that I²C peripherals (e.g., secure elements or PMICs) are not accessed before NAND-based system configuration is complete.