Infineon Technologies CY7C68053-56BAXI

Overview

CY7C68053-56BAXI from Cypress Semiconductor is a low-voltage (1.8 V core), USB 2.0-compliant microcontroller integrating an enhanced 8051 CPU, USB 2.0 transceiver, smart serial interface engine (SIE), four programmable endpoints, and GPIF™ for parallel interface control. It delivers up to 53 MB/s burst transfer rate, supports full-speed (12 Mbps) and high-speed (480 Mbps) USB signaling, and operates with 20 µA typical suspend current - ideal for bus-powered mobile devices including smartphones and MP3 players.

For engineers reviewing the CY7C68053-56BAXI datasheet, CY7C68053-56BAXI pinout, CY7C68053-56BAXI application, or CY7C68053-56BAXI equivalent, key selection criteria include its 1.8 V core/1.8–3.3 V I/O operation, 48/24/12 MHz configurable 8051 clock, integrated I²C master controller, and 56-pin VFBGA package with 24 GPIOs and slave/master FIFO interface capability.

Technical Context

The CY7C68053 implements a hardware-accelerated USB protocol stack via its Smart SIE, offloading enumeration, token handling, and CRC generation from the 8051 core. Its GPIF provides fully programmable waveform descriptors for direct glueless interfacing to ATA, UTOPIA, EPP, and DSP buses without external logic.

It features dual-clock domain architecture: a 480 MHz PLL-derived PHY clock for USB transceiver operation and a separately configurable 12/24/48 MHz 8051 core clock (four clocks per instruction cycle). The device boots firmware from external I²C EEPROM (0xC2 load) and supports ReNumeration™ - dynamic re-enumeration after USB-host-based firmware download.

Key Specifications

Pinout & Package

Package: 56-pin Very Thin Fine-Pitch Ball Grid Array (VFBGA), 5 mm × 5 mm, 0.5 mm pitch, Pb-free, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 2.0 microcontroller applications.

Compared with CY7C68053-56BAXI, CY7C68013A offers broader vendor tool support but lacks ultra-low-power capability, while FX3U delivers higher performance and USB 3.0 but requires redesign of firmware and interface logic - making CY7C68053 optimal for cost-sensitive, battery-constrained USB 2.0 bridges.

Availability

CY7C68053-56BAXI is available at Aetrix Electronics and suitable for smartphone peripheral bridges, USB-to-ATA adapters, and MP3 player firmware loaders requiring stable component supply, industrial temperature tolerance, and long-term lifecycle availability.

Supply support for CY7C68053-56BAXI 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) designs high-performance, low-power programmable systems-on-chip for USB, memory, and PSoC applications.

The MoBL-USB™ FX2LP18 product line targets ultra-low-power, space-constrained USB 2.0 bridging solutions - specifically engineered for mobile consumer electronics where 1.8 V operation and sub-100 mA bus power compliance are mandatory.

FAQ

Does CY7C68053-56BAXI support USB low-speed mode?

No. The CY7C68053-56BAXI supports only USB full-speed (12 Mbps) and high-speed (480 Mbps) modes per USB 2.0 specification. It does not implement the 1.5 Mbps low-speed signaling mode. This is confirmed in the Functional Overview section of datasheet 001-06120 Rev *M, which explicitly states "FX2LP18 does not support the low speed signaling mode."

Can the 8051 core run code directly from external memory?

No. The CY7C68053-56BAXI executes 8051 code exclusively from its 16 KB on-chip RAM, which is loaded at boot time from external I²C EEPROM (0xC2 load) or via USB host download. There is no external program memory interface - the device lacks EA pin functionality or external ROM addressing capability.

What is the maximum data throughput achievable in slave FIFO mode?

In synchronous slave FIFO mode with 16-bit bus width and IFCLK = 48 MHz, the theoretical peak throughput is 96 MB/s. However, real-world sustained throughput is limited to ~53 MB/s due to USB 2.0 protocol overhead and endpoint buffering constraints - matching the documented maximum burst rate in the datasheet's functional description.

Is the I²C interface capable of acting as a slave device?

No. The CY7C68053-56BAXI implements I²C only as a master, operating at 100 kHz or 400 kHz. It cannot function as an I²C slave - the SCL/SDA pins lack slave-address decoding logic and are configured solely for EEPROM boot loading and peripheral configuration tasks.