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Microchip Technology USB4640I-HZH-03-TR
- Part No.:
- USB4640I-HZH-03-TR
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
USB4640I-HZH-03-TR.pdf
- Description:
- IC INTERFACE SPECIALIZED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
USB4640I-HZH-03-TR from Microchip Technology is an industrial-grade Hi-Speed Inter-Chip (HSIC) USB 2.0 hub and multi-format flash media controller IC. It integrates a 48-pin QFN package, upstream HSIC interface compliant with HSIC 1.0, two exposed Hi-Speed USB 2.0 downstream ports, and a dedicated third downstream port hosting SD/MMC/MS/xD card reader functionality as a USB compound device. It delivers sustained transfer rates exceeding 35 MB/s in mixed-speed environments and operates across –40°C to +85°C.
For engineers reviewing the USB4640I-HZH-03-TR datasheet, USB4640I-HZH-03-TR pinout, USB4640I-HZH-03-TR application, or USB4640I-HZH-03-TR equivalent, key selection considerations include HSIC-to-USB bridge capability, integrated flash media support for SD 2.0/MS 1.43/xD 1.2, programmable PortSwap/PortMap/PHYBoost features, and industrial temperature qualification.
Technical Context
The USB4640I-HZH-03-TR implements a dual-role HSIC–USB architecture: its upstream HSIC interface (HSIC_DAT/HSIC_STROBE/HSIC_IMP) connects to an HSIC-enabled host at up to 480 Mb/s using DDR signaling, while its internal 8051 microprocessor (60 MHz, 64 KB ROM, 9 KB RAM) manages hub transaction translation (TT), flash media protocol handling, and configuration via SPI/I²C. The chip supports Full-Speed and Low-Speed peripheral operation on all enabled downstream ports through integrated TT logic.
It embeds three distinct physical interfaces: (1) HSIC digital interconnect with impedance control (50 Ω/40 Ω selectable), (2) two configurable Hi-Speed USB 2.0 differential ports with PHYBoost (4-level drive strength), and (3) a multiplexed 18-pin flash media bus supporting SD/MMC/MS/xD protocols with dedicated control signals (e.g., SD_nCD, MS_INS, xD_nCE, xD_nRE). All USB port termination and pull-up/down resistors are integrated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Upstream Interface | HSIC 1.0 compliant (480 Mb/s DDR data/strobe); supports industrial -40°C to +85°C operation |
| Downstream USB Ports | 2 × Hi-Speed USB 2.0 ports with integrated series termination, pull-up/down, and over-current sense inputs |
| Flash Media Support | SD 2.0/SD-HS/SD-HC, MMC 4.2, Memory Stick 1.43/Pro/Pro-HG/Duo, xD-Picture Card 1.2 |
| Core Processing | 8051-based 60 MHz single-cycle CPU; 64 KB on-chip ROM, 9 KB RAM |
| Power Architecture | Single 3.3 V supply; internal 1.8 V core regulator; external 1.2 V reference supported for HSIC link stability |
| Programmable Features | PortMap (dynamic port reordering), PortSwap (configurable D+/D− pin assignment), PHYBoost (4-level USB drive strength) |
| Package | 48-pin QFN (7 × 7 mm, RoHS-compliant); exposed thermal pad required for grounding |
Pinout & Package
USB4640I-HZH-03-TR is housed in a 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with an exposed ground pad requiring multiple vias to PCB ground. Pin functions are grouped into upstream HSIC, downstream USB, flash media (SD/MS/xD), SPI/I²C, power, and control domains. All USB differential pairs (USBDN_DP2/DM2, USBDN_DP3/DM3) support PortSwap remapping; CRD_PWR provides 100/200 mA card power drive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HSIC_DAT / HSIC_STROBE | Upstream HSIC bidirectional data/strobe | DDR-synchronous interface to HSIC host; impedance controlled via HSIC_IMP pin |
| USBDN_DP2 / USBDN_DM2 | Downstream USB Port #2 differential pair | Hi-Speed USB 2.0 interface with PHYBoost drive strength control and integrated termination |
| USBDN_DP3 / USBDN_DM3 | Downstream USB Port #3 differential pair | Hosts flash media reader as USB compound device; supports SD/MS/xD protocol translation |
| SD_nCD / MS_INS / xD_nCD | Card detection inputs | Separate active-high detection pins per media type; each with internal pull-up for plug-and-play insertion sensing |
| CRD_PWR | Card power driver output | 100/200 mA FET-controlled 3.3 V output; sole power source for attached flash cards per design requirement |
Key Features
| Feature | Design Value |
|---|---|
| HSIC-to-USB Bridge Functionality | Enables low-power, high-bandwidth chip-to-chip connectivity replacing analog USB traces; retains full USB 2.0 software compatibility |
| Multi-Format Flash Media Controller | Single-chip support for SD/MMC/MS/xD protocols eliminates need for discrete readers and reduces BOM count |
| PortSwap Pin Remapping | Allows D+/D− signal routing alignment to physical USB connectors without PCB trace crossing or length mismatch |
| PHYBoost Signal Integrity Recovery | Four-step programmable USB transceiver drive strength compensates for board-level signal loss on long or lossy traces |
| Flexible Firmware Configuration | Supports external SPI Flash or I²C EEPROM for customizable VID/PID, strings, port mapping, and power sequencing |
Applications
| Smartphone Internal Expansion | Industrial Printer Media Interface |
|---|---|
Use Scenario: Integrating SD card and USB peripheral expansion into compact mobile SoC designs where space and power efficiency are critical. IC Role / Device Role / Timing Role: Acts as HSIC-to-USB bridge and embedded flash media controller, enabling host SoC to access storage and peripherals via single 2-pin HSIC link. Use Value: Reduces PCB layer count and EMI by replacing analog USB routing with digital HSIC; sustains >35 MB/s read/write throughput across SD and USB devices. | Use Scenario: Adding multi-format memory card support and USB peripheral connectivity to industrial printers operating in extended temperature environments. IC Role / Device Role / Timing Role: Serves as ruggedized USB hub and flash reader IC, managing SD, xD, and Memory Stick media alongside USB-connected print accessories. Use Value: Industrial temperature rating (-40°C to +85°C) ensures reliable operation in uncontrolled factory environments; integrated over-current protection safeguards downstream peripherals. |
| Mobile PC Docking Station | GPS Navigation System Storage |
Use Scenario: Enabling compact docking solutions that provide both USB peripheral expansion and removable flash storage for ultrabooks and tablets. IC Role / Device Role / Timing Role: Functions as compound USB device: hub for keyboard/mouse/webcam and flash reader for user data backup/retrieval. Use Value: PortMap allows dynamic reordering of enumerated USB ports to match OEM chassis layout; CRD_PWR delivers stable 200 mA to high-capacity SDXC cards. | Use Scenario: Supporting map updates and media playback via removable flash cards in automotive-grade GPS units with strict thermal requirements. IC Role / Device Role / Timing Role: Provides certified SD 2.0 and xD 1.2 interface with robust ESD/EMI performance for in-vehicle deployment. Use Value: Meets AEC-Q200-relevant reliability benchmarks via industrial temp grade and enhanced ESD protection; xD license compliance enables legal use in commercial navigation hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub and flash media controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB4604I-HZH-03-TR | 4-port USB 2.0 hub only; no integrated flash media controller or HSIC interface | Lacks SD/MS/xD support and HSIC bridge capability; suitable only for pure USB expansion | Select when flash reader functionality is handled externally or not required |
| USB5744-ABZT | 4-port USB 3.0 hub with integrated USB 2.0 TT; no flash media interface or HSIC support | Offers SuperSpeed bandwidth but no SD/MMC/MS/xD protocol engine or chip-to-chip HSIC link | Choose for higher-bandwidth peripheral expansion where legacy flash card support is absent |
Compared with USB4640I-HZH-03-TR, USB4604I-HZH-03-TR omits flash media control and HSIC bridging-reducing integration but increasing design complexity for card readers-while USB5744-ABZT adds USB 3.0 speed yet removes all flash media capability, making it unsuitable for combo applications requiring SD/xD/MS interoperability.
Availability
USB4640I-HZH-03-TR is available at Aetrix Electronics and suitable for smartphone internal expansion, industrial printer media interface, and GPS navigation system storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for USB4640I-HZH-03-TR 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
Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog components, and connectivity solutions for embedded systems.
The USB4640/USB4640i product line was designed to consolidate USB hub functionality and multi-format flash media control into a single IC for space-constrained, power-sensitive mobile and industrial platforms leveraging HSIC interconnect.
FAQ
What is the primary function of the USB4640I-HZH-03-TR?
The USB4640I-HZH-03-TR is a single-chip Hi-Speed Inter-Chip (HSIC) USB 2.0 hub and multi-format flash media controller. It bridges an HSIC-enabled host processor to two external Hi-Speed USB 2.0 peripherals and internally hosts an SD/MMC/Memory Stick/xD card reader on a third downstream port as a USB compound device. Its industrial temperature rating (–40°C to +85°C) and integrated PHYBoost/PortSwap features make it suitable for demanding embedded applications. USB4640I-HZH-03-TR implements this functionality using an on-chip 8051 CPU, 64 KB ROM, and 9 KB RAM.
Does the USB4640I-HZH-03-TR support xD-Picture Card licensing requirements?
Yes, the USB4640I-HZH-03-TR supports xD-Picture Card 1.2 specification compliance, but end users must obtain a separate license from the xD-Picture Card License Office to legally implement xD functionality. The IC provides all necessary hardware signals-including xD_nCE, xD_nRE, xD_nWE, xD_nCD, and xD_CLE-with appropriate buffer types (O8PU/O8PD) and internal pull resistors as defined in the datasheet. USB4640I-HZH-03-TR does not include licensed firmware; license acquisition remains the responsibility of the system integrator.
How does the CRD_PWR pin function in the USB4640I-HZH-03-TR?
The CRD_PWR pin on the USB4640I-HZH-03-TR is a dedicated 3.3 V card power driver output rated for 100 mA or 200 mA, controlled by internal FET logic. It must be the sole power source for attached flash media cards (SD/MS/xD) to maintain voltage integrity across all pins. Using external regulators or additional FETs violates the device's electrical specifications. USB4640I-HZH-03-TR requires proper decoupling and thermal management when driving high-capacity SDXC cards drawing peak current.
Can the USB4640I-HZH-03-TR operate without an external crystal?
Yes, the USB4640I-HZH-03-TR supports both crystal and external clock input modes. XTAL1 (CLKIN) accepts a 24 MHz external CMOS clock signal (1.8 V logic level) when the crystal is omitted; XTAL2 is left open in this configuration. The internal crystal driver circuit remains unused, and PLL locking behavior is preserved. USB4640I-HZH-03-TR maintains full USB 2.0 timing compliance and HSIC link stability under either clock source, provided jitter and duty cycle meet specification limits.
What flash media standards does the USB4640I-HZH-03-TR natively support?
The USB4640I-HZH-03-TR natively supports Secure Digital 2.0 (including SD-HS and SD-HC), MultiMediaCard 4.2 (1/4/8-bit), Memory Stick 1.43, Memory Stick Pro 1.02, Memory Stick Pro-HG 1.01, Memory Stick Duo 1.10, and xD-Picture Card 1.2. It handles protocol translation, command sequencing, and data transfer for all these formats through dedicated pin groups (e.g., SD_CMD/SD_D[7:0], MS_SCLK/MS_D[7:0], xD_nCE/xD_D[7:0]). USB4640I-HZH-03-TR does not support SD 3.0/UHS-I or newer variants.
USB4640I-HZH-03-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- USB 2.0
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 48-QFN (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
USB4640I-HZH-03-TR FAQ
1.How can I place an order for USB4640I-HZH-03-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for USB4640I-HZH-03-TR 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 USB4640I-HZH-03-TR reliable?
The price and inventory of USB4640I-HZH-03-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USB4640I-HZH-03-TR is usually 5 days.
3.What payment methods are accepted for USB4640I-HZH-03-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB4640I-HZH-03-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB4640I-HZH-03-TR?
USB4640I-HZH-03-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB4640I-HZH-03-TR 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 USB4640I-HZH-03-TR?
For technical support, including USB4640I-HZH-03-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB4640I-HZH-03-TR requirements.
6.How does Aetrix verify that USB4640I-HZH-03-TR is sourced from the original manufacturer or authorized distributors?
All USB4640I-HZH-03-TR 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 USB4640I-HZH-03-TR meets industry standards.
7.What is the process for return or replacement of USB4640I-HZH-03-TR?
All USB4640I-HZH-03-TR units undergo pre-shipment inspection (PSI). If there is an issue with USB4640I-HZH-03-TR, 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 USB4640I-HZH-03-TR part is unused and in its original packaging.
Return procedure for USB4640I-HZH-03-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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