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Infineon Technologies CY7C65632-28LTXCT
- Part No.:
- CY7C65632-28LTXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
CY7C65632-28LTXCT.pdf
- Description:
- IC CONTROLLER USB 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,879
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Product details
Overview
CY7C65632-28LTXCT from Infineon is a USB 2.0 hub controller IC with single transaction translator, supporting up to four downstream ports (two active, two NC in 28-pin QFN), bus/self-powered operation, integrated 5 V-to-3.3 V regulator, and 12 MHz ±500 ppm crystal input. It delivers ultra-low power consumption for embedded USB host expansion in space-constrained industrial and portable devices.
For engineers reviewing the CY7C65632-28LTXCT datasheet, CY7C65632-28LTXCT pinout, CY7C65632-28LTXCT application, or CY7C65632-28LTXCT equivalent, key selection criteria include port count configuration (2-port vs 4-port variants), internal regulator support, EEPROM-based VID/PID assignment, and QFN-28 thermal performance in bus-powered systems.
Technical Context
The CY7C65632 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. Its MCU executes firmware from 2 KB ROM with 64 B RAM to manage enumeration, suspend/resume, and port status indicators.
It supports dual power modes: bus-powered (5 V input via internal regulator) or self-powered (external 3.3 V supply), with automatic mode switching and internal power-failure detection for ESD recovery. Downstream ports operate at LS/FS speeds and support individual/ganged power switching with overcurrent detection per port.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 specification compliant; certified TID# 30000060 - ensures interoperability with standard hosts and peripherals. |
| Downstream Ports | Up to 4 ports; CY7C65632-28LTXCT configures ports 3–4 as No Connect - enables 2-port compact design in QFN-28 package. |
| Transaction Translator | Single TT shared across all downstream ports - reduces silicon area and cost versus multi-TT hubs, limits concurrent HS-to-FS split transactions. |
| Power Supply | Single 5 V input with integrated regulator - eliminates external LDO; supports optional external 3.3 V supply for self-powered mode. |
| Clock Input | 12 MHz ±500 ppm crystal (600 µW drive level) with integrated PLL - enables precise timing without external oscillator; 27/48 MHz OSC-in also supported. |
| Operating Temp | 0°C to +70°C - validated for commercial-grade embedded applications including point-of-sale terminals and peripheral docks. |
| Memory | 2 KB ROM + 64 B RAM MCU - executes hub control firmware and handles I²C/SPI EEPROM configuration without external processor. |
Pinout & Package
Package: 28-pin QFN (5 mm × 5 mm, 0.5 mm pitch), thermally enhanced with exposed pad for improved power dissipation in bus-powered configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | 5 V Power Input | Primary supply for internal regulator; must be decoupled near pin for stable USB signaling. |
| VDDIO | 3.3 V I/O Supply | Supplies USB PHY and digital I/O; tied to internal regulator output or external 3.3 V source. |
| XTAL_IN / XTAL_OUT | Clock Input/Output | Connects to 12 MHz crystal; internal PLL generates USB clock - no external oscillator required. |
| D+ / D− (Upstream) | USB 2.0 Upstream Differential Pair | Connects directly to host controller; integrated termination resistors eliminate external components. |
| D+ / D− (Port 1, Port 2) | Downstream USB Differential Pairs | Ports 1–2 active; ports 3–4 internally disabled in 28-pin variant - simplifies PCB routing. |
| PWR#1 / PWR#2 | Port Power Enable (Active Low) | Controls external MOSFETs for individual port power switching; polarity configurable via GPIO or EEPROM. |
| OVR#1 / OVR#2 | Overcurrent Sense Inputs | Monitor downstream port current via external sense resistors; trigger automatic port disable on fault. |
| LED1 / LED2 | Port Status Indicator Outputs | Drive external LEDs for activity/link status; programmable blink patterns via firmware. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Regulator | Reduces BOM by eliminating external 5 V-to-3.3 V LDO; supports single-supply 5 V system design. |
| Configurable VID/PID | Enables OEM branding and device-class customization via external I²C/SPI EEPROM - no mask ROM re-spin needed. |
| Auto Power Mode Switching | Seamlessly transitions between bus-powered and self-powered operation based on VDD/VDDIO voltage levels - improves system robustness during hot-plug events. |
| Internal Termination Resistors | Removes 4× 15 kΩ pull-downs and 2× 90 Ω upstream/downstream terminations - saves 6 passives and board area. |
| EEPROM-Based Port Configuration | Allows runtime-defined port count (2 or 4), removable/non-removable attributes, and gang/individual power control - accelerates design iteration. |
Applications
| USB Peripheral Docking Station | Industrial Human-Machine Interface (HMI) |
|---|---|
Use Scenario: Compact docking station for thin clients or medical tablets requiring two USB peripherals (keyboard + mouse) with minimal power draw. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing upstream link to host and downstream links to HID devices; provides precise 12 MHz PLL-derived timing for packet framing. Use Value: Ultra-low power operation extends battery life; integrated regulator and termination reduce component count by ≥6 parts versus discrete hub designs. | Use Scenario: Factory-floor HMI panel with USB service port and integrated barcode scanner interface. IC Role / Device Role / Timing Role: Hub controller enabling simultaneous connection of service PC (upstream) and scanner (downstream port 1); handles LS/FS speed negotiation automatically. Use Value: Overcurrent detection prevents field failures from shorted cables; EEPROM-configurable VID/PID allows seamless integration into OEM firmware ecosystems. |
| Point-of-Sale (POS) Terminal | Embedded Test & Measurement Adapter |
Use Scenario: Retail terminal connecting payment reader and receipt printer via isolated USB paths. IC Role / Device Role / Timing Role: Dual-port hub providing independent power control (PWR#1/PWR#2) to isolate faults between peripherals; manages remote wakeup for sleep-mode resumption. Use Value: Individual port power switching avoids full-system reset during peripheral failure; QFN-28 footprint fits tight PCB layouts typical in handheld POS units. | Use Scenario: Lab adapter converting USB host signals to test instrumentation with strict ESD immunity requirements. IC Role / Device Role / Timing Role: Hub controller with internal power-failure detection and ESD recovery logic - maintains USB link integrity after electrostatic discharge events. Use Value: Integrated ESD protection and auto-recovery reduce need for external TVS diodes; 0°C to +70°C rating ensures reliability in non-climate-controlled lab environments. |
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 |
|---|---|---|---|
| CY7C65634-48LTXC | 48-pin TQFP package; supports all four downstream ports active; same core architecture and EEPROM configurability. | Used where full 4-port expansion is required and PCB area permits larger TQFP footprint. | Select when needing full port count and higher thermal mass; not pin-compatible with QFN-28. |
| UPD720114GA-YC-A | NEC/Renesas 4-port hub with dual TT; supports simultaneous HS-to-FS transactions; requires external 3.3 V regulator and clock oscillator. | Preferred for high-throughput multi-device systems (e.g., USB audio interfaces) where split-transaction concurrency matters. | Choose for higher bandwidth demand; adds ≥5 passives and increases BOM cost versus CY7C65632's integrated solution. |
Compared with CY7C65634-48LTXC, this QFN-28 variant trades port count for size and thermal efficiency; versus UPD720114GA, it reduces component count and power but lacks dual-TT concurrency - optimal for cost-sensitive, space-constrained 2-port applications.
Availability
CY7C65632-28LTXCT is available at Aetrix Electronics and suitable for USB peripheral docking stations, industrial HMIs, point-of-sale terminals, and embedded test adapters requiring stable component supply and long-term lifecycle support.
Supply support for CY7C65632-28LTXCT 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 leader specializing in power management, sensing, and connectivity solutions for automotive, industrial, and IoT markets.
CY7C65632 belongs to the HX2VL family - designed specifically for ultra-low-power, cost-optimized USB 2.0 hub implementations in space-constrained embedded systems.
FAQ
What power supply configurations does CY7C65632-28LTXCT support?
CY7C65632-28LTXCT supports both bus-powered (5 V input to VDD, internal regulator supplies VDDIO) and self-powered (external 3.3 V applied to VDDIO) modes, with automatic detection and seamless switching. The internal regulator eliminates need for external LDO in bus-powered designs, and the chip includes power-failure detection for ESD recovery.
How many downstream ports are functional in the 28-pin QFN package?
The CY7C65632-28LTXCT implements only two active downstream USB ports (Port 1 and Port 2); pins for Ports 3 and 4 are designated No Connect per the datasheet and block diagram. This 2-port configuration is fixed by the QFN-28 package variant and cannot be enabled via EEPROM or pin strapping.
Can VID and PID be customized without changing the silicon?
Yes - VID and PID are fully configurable via external I²C or SPI EEPROM. The MCU reads these values during power-on initialization, allowing OEMs to assign unique identifiers for driver matching and device classification without mask ROM customization or hardware revision changes.
Does CY7C65632-28LTXCT require an external crystal or can it use an oscillator?
It supports both: a 12 MHz ±500 ppm crystal connected to XTAL_IN/XTAL_OUT (with internal PLL), or a 27 MHz or 48 MHz CMOS oscillator signal applied to XTAL_IN (with XTAL_OUT left unconnected). Crystal drive level must be ≤600 µW; oscillator input must meet VIH/VIL thresholds specified in the AC characteristics table.
CY7C65632-28LTXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-WFQFN Exposed Pad
- 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:
- 28-QFN (5x5)
- Grade:
- -
- Qualification:
- -
CY7C65632-28LTXCT FAQ
1.How can I place an order for CY7C65632-28LTXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65632-28LTXCT 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 CY7C65632-28LTXCT reliable?
The price and inventory of CY7C65632-28LTXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65632-28LTXCT is usually 5 days.
3.What payment methods are accepted for CY7C65632-28LTXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65632-28LTXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65632-28LTXCT?
CY7C65632-28LTXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65632-28LTXCT 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 CY7C65632-28LTXCT?
For technical support, including CY7C65632-28LTXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65632-28LTXCT requirements.
6.How does Aetrix verify that CY7C65632-28LTXCT is sourced from the original manufacturer or authorized distributors?
All CY7C65632-28LTXCT 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 CY7C65632-28LTXCT meets industry standards.
7.What is the process for return or replacement of CY7C65632-28LTXCT?
All CY7C65632-28LTXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65632-28LTXCT, 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 CY7C65632-28LTXCT part is unused and in its original packaging.
Return procedure for CY7C65632-28LTXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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