Infineon Technologies CY7C65632-48AXC

Overview

CY7C65632-48AXC from Infineon is a USB 2.0 hub controller with single transaction translator, supporting up to four downstream ports, bus/self-power auto-switching, and integrated 5 V-to-3.3 V regulator. It operates at 0°C to 70°C, consumes ultra-low power, and targets embedded USB hub applications requiring minimal BOM count and ESD-robust port management.

For engineers reviewing the CY7C65632-48AXC datasheet, CY7C65632-48AXC pinout, CY7C65632-48AXC application, or CY7C65632-48AXC equivalent, key selection criteria include TT architecture, integrated termination resistors, EEPROM-configurable VID/PID, 48-pin TQFP package compatibility, and support for individual/ganged port power switching in space-constrained designs.

Technical Context

The CY7C65632-48AXC implements a single-TT USB 2.0 hub architecture with full-speed and low-speed backward compatibility on all four downstream ports. Its MCU (2 KB ROM, 64 B RAM) executes enumeration, suspend/resume coordination, and GPIO-controlled EEPROM configuration via I²C/SPI.

It integrates upstream pull-up, downstream pull-down, and bidirectional termination resistors, eliminating six external components. The internal regulator accepts 5 V input and delivers regulated 3.3 V output, while supporting optional external 3.3 V regulation for efficiency-critical systems.

Key Specifications

Pinout & Package

Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with USB2514B-AEZG and TUSB2036VFR, CY7C65632-48AXC uniquely combines integrated regulation, EEPROM-based configurability, and ESD recovery-reducing total solution size by ≥35% and enabling firmware-updatable hub behavior in production units.

Availability

CY7C65632-48AXC is available at Aetrix Electronics and suitable for USB docking stations, industrial HMIs, medical point-of-care devices, and automotive infotainment accessories requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY7C65632-48AXC 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensor, and connectivity solutions for industrial, automotive, and consumer markets.

CY7C65632-48AXC belongs to the HX2VL family of ultra-low-power USB 2.0 hub controllers, designed specifically for space-constrained, cost-sensitive embedded systems requiring minimal external components and robust USB compliance.

FAQ

Does CY7C65632-48AXC support USB Battery Charging (BC) 1.2 specification?

No. CY7C65632-48AXC does not implement BC 1.2 detection logic or dedicated charging port signaling. It supports standard USB 2.0 enumeration and data transfer only. For BC 1.2 functionality, external charging controller ICs must be added in series with downstream ports.

Can the internal 5 V-to-3.3 V regulator be disabled to use an external 3.3 V supply?

Yes. When external 3.3 V is applied to the VDDIO pin and the NC pin (Pin 48 in 48-pin TQFP) is left unconnected, the internal regulator is automatically disabled. This configuration reduces quiescent current by ~1.2 mA and improves efficiency in systems with tightly regulated 3.3 V rails.

What crystal specifications are required for reliable 12 MHz operation?

A fundamental-mode 12 MHz crystal with ±500 ppm tolerance, 600 µW maximum drive level, and load capacitance of 12 pF is required. The device's internal oscillator circuit provides automatic gain control; crystals exceeding 600 µW drive level risk premature aging or oscillation failure.

How many I²C addresses does the CY7C65632-48AXC support for EEPROM configuration?

The device supports a single fixed I²C address (0x50) for external EEPROM communication. Address pins are not provided; configuration EEPROM must be pre-programmed with this address and compatible timing (standard-mode, 100 kHz).