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Infineon Technologies CY7C65634-48AXCT
- Part No.:
- CY7C65634-48AXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 48-LQFP
- Datasheet:
-
CY7C65634-48AXCT.pdf
- Description:
- IC CONTROLLER USB 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,628
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Product details
Overview
CY7C65634-48AXCT from Infineon is a USB 2.0 hub controller IC with single transaction translator, supporting four downstream ports (FS/LS compatible), bus- or self-powered operation, and integrated 5 V to 3.3 V regulator - used in embedded USB hubs requiring low BOM count and ESD-robust port management.
For engineers reviewing the CY7C65634-48AXCT datasheet, CY7C65634-48AXCT pinout, CY7C65634-48AXCT application, or CY7C65634-48AXCT equivalent, this device delivers verified low-power USB 2.0 hub functionality with configurable EEPROM-based VID/PID, individual/ganged port power control, and internal termination resistors for rapid system integration.
Technical Context
The CY7C65634-48AXCT implements a single-TT USB 2.0 hub architecture with integrated SIE, HS USB control logic, and hub repeater logic compliant with USB 2.0 TID# 30000060. It supports full-speed and low-speed downstream devices via shared TT translation.
Its MCU (2K ROM, 64-byte RAM) runs at 12 MHz and manages enumeration, port status indicators, overcurrent detection, and I²C/SPI EEPROM configuration. Internal power failure detection enables automatic ESD recovery without external supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 specification compliant; certified TID# 30000060 - ensures interoperability with host controllers and peripherals. |
| Downstream Ports | 4 × USB 2.0 ports, backward-compatible with FS/LS - enables multi-peripheral connectivity in compact systems. |
| Transaction Translator | Single TT architecture - reduces silicon area and cost vs. multi-TT hubs while maintaining HS-to-FS/LS split transaction support. |
| Power Modes | Bus-powered and self-powered auto-switching - eliminates manual power mode selection during design or field deployment. |
| Internal Regulator | Integrated 5 V to 3.3 V regulator - removes need for external LDO, reducing BOM and PCB footprint. |
| Crystal Input | 12 MHz ±500 ppm crystal (600 µW drive level) with integrated PLL - enables precise timing without external oscillator. |
| Operating Temp | 0°C to +70°C - validated for commercial-grade industrial and consumer embedded applications. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | 5 V supply input | Primary power rail for internal regulator and USB PHY; requires local 10 µF + 0.1 µF decoupling. |
| VDDIO | 3.3 V I/O supply | Supplies GPIO, I²C/SPI interface, and LED drivers; may be sourced internally or externally. |
| D+ / D− (Upstream) | USB 2.0 upstream differential pair | Connects directly to host controller; includes integrated 1.5 kΩ upstream pull-up resistor. |
| D+ / D− (Port 1–4) | Downstream USB 2.0 differential pairs | Each pair includes integrated 15 kΩ pull-down resistors and overcurrent sense capability. |
| PWR#1–4 | Port power enable (active-low) | Controls individual port power switching; polarity configurable via EEPROM or I/O pin. |
| OVR#1–4 | Overcurrent fault indicator (active-low) | Asserted when downstream current exceeds threshold; latched until cleared by MCU or reset. |
| LED1–4 | Port activity/status indicator output | Drives external LEDs per port; supports dual-color indication via PWM-capable GPIO. |
| XTAL_IN / XTAL_OUT | 12 MHz crystal oscillator interface | Supports fundamental-mode crystal with integrated PLL; no external load capacitors required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated termination resistors | Eliminates 8 external 15 kΩ pull-downs and 2 × 90 Ω upstream terminations - cuts BOM and layout complexity. |
| Configurable port removability | Per-port removable/non-removable setting via EEPROM or pin strapping - enables compliance with USB hub class descriptors for fixed/permanent installations. |
| Auto power mode switching | Seamlessly transitions between bus-powered and self-powered modes based on VDD voltage and load - prevents enumeration failure during mixed-power scenarios. |
| Internal power failure detection | Triggers hardware reset and ESD recovery sequence without firmware intervention - improves robustness in noisy industrial environments. |
| I²C/SPI EEPROM interface | Enables field-updatable VID/PID, port count, gang/individual mode, and clock source selection - supports post-manufacture customization. |
Applications
| Industrial Human-Machine Interface (HMI) | Embedded Point-of-Sale (POS) Terminal |
|---|---|
Use Scenario: Multi-peripheral USB hub inside sealed panel-mounted HMI unit connecting barcode scanner, keypad, and printer. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing concurrent FS peripherals with deterministic latency and overcurrent protection. Use Value: Integrated pull-downs and auto power switching reduce external components; -40°C to +85°C extended variants exist, but CY7C65634-48AXCT's 0°C–70°C range suits climate-controlled factory floors. | Use Scenario: Compact POS terminal integrating payment reader, receipt printer, and customer display via single USB upstream link. IC Role / Device Role / Timing Role: Low-power hub controller enabling battery-backed operation during brief outages using self-powered mode fallback. Use Value: Bus/self-power auto-switching maintains peripheral connectivity during AC loss; internal regulator avoids extra DC-DC stage. |
| Medical Diagnostic Handheld | Smart Home Gateway Hub |
Use Scenario: Portable ultrasound or ECG device with USB-C host port expanding to sensor dongles and flash storage. IC Role / Device Role / Timing Role: USB 2.0 hub controller providing isolated, ESD-hardened downstream ports with per-port power gating. Use Value: Integrated overcurrent detection and internal termination meet IEC 60601-1 creepage/clearance requirements; single TT minimizes EMI emissions. | Use Scenario: Central home automation hub aggregating Zigbee, BLE, and legacy USB peripherals (webcam, mic, storage). IC Role / Device Role / Timing Role: Cost-optimized USB hub enabling plug-and-play peripheral onboarding without host CPU involvement. Use Value: EEPROM-configurable VID/PID allows OEM branding; 48-pin TQFP supports automated optical inspection and reflow compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 hub controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C65632-28AXC | 28-pin QFN package; only two downstream ports enabled; same core architecture and EEPROM configurability. | Suitable for space-constrained dual-port applications where port count and thermal dissipation are prioritized over expandability. | Select when board area is critical and ≥3 downstream ports are unnecessary. |
| UPD720114GA-YC-A | Multi-TT architecture; supports up to 4 downstream ports with independent TTs; requires external 3.3 V supply and discrete termination. | Better suited for high-throughput mixed-speed environments (e.g., simultaneous HS webcam + FS keyboard); higher BOM and layout overhead. | Choose when concurrent high-bandwidth and low-speed traffic demands independent TT arbitration. |
Compared with CY7C65632-28AXC, the CY7C65634-48AXCT offers full 4-port capability and TQFP manufacturability; versus UPD720114GA-YC-A, it trades TT flexibility for lower power, smaller footprint, and integrated regulation - ideal for cost-sensitive, low-heat industrial hubs.
Availability
CY7C65634-48AXCT is available at Aetrix Electronics and suitable for industrial HMIs, embedded POS terminals, medical handheld diagnostics, and smart home gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY7C65634-48AXCT 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, sensing, and connectivity solutions for automotive, industrial, and IoT markets.
The CY7C65634 belongs to Infineon's HX2VL family of ultra-low-power USB 2.0 hub controllers, designed specifically for cost-sensitive, space-constrained embedded systems needing minimal external components and robust USB compliance.
FAQ
What is the maximum allowed crystal drive level for CY7C65634-48AXCT?
The datasheet specifies a maximum crystal drive level of 600 µW for the 12 MHz fundamental-mode crystal. Exceeding this may cause premature crystal aging or instability. The integrated oscillator circuit is optimized for this level; no external series resistor is needed unless drive level exceeds specification per crystal manufacturer test report.
Does CY7C65634-48AXCT support USB Battery Charging (BC) 1.2 specification?
No, CY7C65634-48AXCT does not implement BC 1.2 detection logic or dedicated charging port signaling. It complies strictly with USB 2.0 hub class specification and provides standard downstream port power switching and overcurrent protection, but lacks D+–D− voltage detection circuitry required for CDP/DCP/SDP identification.
Can the upstream pull-up resistor be disabled for use in a composite device?
No, the 1.5 kΩ upstream pull-up resistor is hard-wired and non-disableable. It is required for USB enumeration as a hub device. For composite device implementations, this part must operate as a standalone hub; it cannot be embedded as a sub-component within a larger USB device without violating USB topology rules.
Is external EEPROM mandatory for basic operation of CY7C65634-48AXCT?
No, external EEPROM is optional. Default configuration (4 ports, removable, bus-powered, 12 MHz crystal) is stored in mask ROM. EEPROM is only required to customize VID/PID, port count, power mode behavior, or reference clock source - enabling differentiation and field updates without mask changes.
CY7C65634-48AXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.15V ~ 5.25V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Grade:
- -
- Qualification:
- -
CY7C65634-48AXCT FAQ
1.How can I place an order for CY7C65634-48AXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65634-48AXCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY7C65634-48AXCT reliable?
The price and inventory of CY7C65634-48AXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65634-48AXCT is usually 5 days.
3.What payment methods are accepted for CY7C65634-48AXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65634-48AXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65634-48AXCT?
CY7C65634-48AXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65634-48AXCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY7C65634-48AXCT?
For technical support, including CY7C65634-48AXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65634-48AXCT requirements.
6.How does Aetrix verify that CY7C65634-48AXCT is sourced from the original manufacturer or authorized distributors?
All CY7C65634-48AXCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY7C65634-48AXCT meets industry standards.
7.What is the process for return or replacement of CY7C65634-48AXCT?
All CY7C65634-48AXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65634-48AXCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY7C65634-48AXCT part is unused and in its original packaging.
Return procedure for CY7C65634-48AXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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