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Microchip Technology USB2640I-HZH-02
- Part No.:
- USB2640I-HZH-02
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
USB2640I-HZH-02.pdf
- Description:
- IC INTERFACE SPECIALIZED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:900
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Product details
Overview
USB2640I-HZH-02 from Microchip Technology is a USB 2.0 Hi-Speed hub IC with integrated flash media controller supporting SD 2.0, MMC 4.2, Memory Stick 1.43/Pro/HG/Duo, and xD-Picture Card 1.2. It delivers average sustained transfer rates exceeding 35 MB/s, features an 8051 8-bit microprocessor (60 MHz single-cycle), 64 KB on-chip ROM, 9 KB RAM, and operates across -40°C to +85°C industrial temperature range.
For engineers reviewing the USB2640I-HZH-02 datasheet, USB2640I-HZH-02 pinout, USB2640I-HZH-02 application, or USB2640I-HZH-02 equivalent, key selection considerations include its triple-port architecture (1 internal flash port + 2 exposed downstream USB ports), multiplexed card interface for combo sockets, PortSwap/PortMap/PHYBoost programmability, and support for external I²C/SPI configuration and USB-based EEPROM updates.
Technical Context
The USB2640I-HZH-02 integrates a transaction translator (TT) enabling concurrent Low-Speed and Full-Speed peripheral operation on all enabled downstream ports, while maintaining Hi-Speed upstream connectivity. Its hardware-controlled data flow architecture handles self-mapped flash media without host CPU intervention.
It employs a dedicated 8051 core with 64 KB ROM and 9 KB RAM to execute hub management and flash media protocol stacks-including SD/MMC command parsing, MS bus state control, and xD ALE/CLE timing-while supporting optional external firmware via SPI (30/60 MHz, single/dual bit, Mode 0/3).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Hi-Speed hub with TT; supports LS/FS/HS devices on all downstream ports |
| Flash Media Support | SD 2.0 (HC/HS), MMC 4.2 (streaming), MS 1.43/Pro 1.02/Pro-HG 1.01/Duo 1.10, xD 1.2 - all via shared multiplexed pins |
| Data Throughput | Average sustained transfer >35 MB/s - host- and media-dependent; enables real-time media playback/write |
| Processor Core | 8051 8-bit MCU @ 60 MHz single-cycle execution - runs embedded hub and flash controller firmware |
| Memory Resources | 64 KB on-chip ROM + 9 KB RAM - sufficient for dual-role firmware without external code memory |
| Power Supply | Single 3.3 V input; internal 1.8 V core regulator - reduces BOM count and power design complexity |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Package | 48-pin QFN (7 × 7 mm, RoHS) - exposes USB differential pairs, SPI, I²C, and multiplexed flash interface pins |
Pinout & Package
USB2640I-HZH-02 is housed in a 48-pin QFN package (7 × 7 mm, RoHS compliant) with exposed thermal pad (VSS). Pin functions are validated per Microchip DS00001948C, including dedicated USB upstream/downstream PHY pins, multiplexed xD/SD/MS interface, SPI/I²C configuration interfaces, and CRD_PWR for 3.3 V/200 mA flash slot power control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB+/USB- | Upstream USB differential pair | Connects to host controller; supports PortSwap for PCB trace alignment |
| USBDN_DP2/DM2 & USBDN_DP3/DM3 | Downstream USB differential pairs | Two exposed ports for external peripherals; each with programmable PHYBoost drive strength |
| xD_D[7:0]/SD_D[7:0]/MS_D[7:0] | Multiplexed flash media data bus | Shared pins for xD/SD/MMC/MS - requires combo socket; no external level shifters needed |
| CRD_PWR | Flash card power driver | 100–200 mA 3.3 V output; mandatory for xD-Picture Card compliance; configurable as GPIO if unused |
| SPI_CE_n / SPI_CLK / SPI_DO / SPI_DI | External firmware interface | Supports 30/60 MHz SPI Flash or I²C EEPROM for configuration and field updates |
| PRTCTL2/PRTCTL3 | Downstream port power control | Active-high outputs with internal pull-ups; monitor over-current via same pins when enabled |
| nRESET | Asynchronous reset input | Active-low, ≥1 µs pulse; resets 8051 core, USB state machines, and flash controller logic |
Key Features
| Feature | Design Value |
|---|---|
| PortSwap | Per-port programmable D+/D− pin assignment - eliminates USB trace crossing and unequal lengths on PCB |
| PHYBoost | 4-level programmable USB transceiver drive strength - recovers signal integrity degraded by long cables or poor layout |
| PortMap | Flexible port disable/reordering - enables single firmware image across multiple platform designs with differing port counts |
| Integrated Flash Controller | Hardware-accelerated SD/MMC/MS/xD protocol handling - offloads host CPU and ensures deterministic timing |
| EEPROM Update via USB | Field firmware and configuration updates without disassembly - supports vendor ID, product ID, and string customization |
| On-board Crystal Driver | 24 MHz crystal oscillator circuit - eliminates need for external oscillator; optional external 24 MHz clock input supported |
Applications
| Desktop & Mobile PCs | Printers & MFPs |
|---|---|
Use Scenario: Adding USB expansion and built-in SD/MS/xD card reader to compact desktop motherboards or laptop docking stations. IC Role / Device Role / Timing Role: Acts as compound USB device: hub controller + flash media reader/writer with integrated TT and 8051 firmware engine. Use Value: Eliminates separate hub and card reader ICs; sustains >35 MB/s transfers for fast photo/video import from consumer flash cards. | Use Scenario: Enabling direct flash card printing in multifunction printers without host PC involvement. IC Role / Device Role / Timing Role: Embedded flash media controller executing SD/MMC/MS protocols autonomously via on-chip 8051 core. Use Value: Supports offline printing from SD/MS cards using preloaded firmware - no host driver or OS dependency required. |
| GPS Navigation Systems | Industrial Data Loggers |
Use Scenario: Adding map update capability via SD card in automotive GPS units with space-constrained PCB layouts. IC Role / Device Role / Timing Role: USB hub + flash reader operating as single compound device; uses PortSwap to align USB traces directly to front-panel connectors. Use Value: Reduces EMI risk and layout complexity while supporting hot-swap SD card updates in harsh automotive environments (-40°C to +85°C). | Use Scenario: Storing sensor data to SD cards in ruggedized industrial loggers deployed in remote locations. IC Role / Device Role / Timing Role: Flash media controller with hardware CRC, error recovery, and wear leveling support - managed by on-chip 8051 without host intervention. Use Value: Ensures reliable long-term data capture even during power interruptions; leverages internal 9 KB RAM for buffering before flash writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub + flash media controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2641I-HZH-02 | Omits xD-Picture Card interface; identical pinout, firmware, and SD/MMC/MS support | Not suitable where xD card compatibility is required; otherwise drop-in replacement | Select USB2641I-HZH-02 when xD support is unnecessary - reduces licensing overhead and simplifies qualification |
| GL852G-UF | USB 2.0 hub only (no integrated flash controller); requires external SD/MS controller and glue logic | Higher BOM cost and PCB area; lacks hardware-accelerated flash protocol handling and >35 MB/s throughput | Choose GL852G-UF only if flash media support is implemented separately - USB2640I-HZH-02 consolidates functionality and improves system-level performance |
Compared with USB2641I-HZH-02, USB2640I-HZH-02 adds xD-Picture Card 1.2 support and associated licensing path; compared with GL852G-UF, it integrates flash media control, eliminating external controllers, reducing latency, and enabling higher sustained throughput through hardware-managed data flow.
Availability
USB2640I-HZH-02 is available at Aetrix Electronics and suitable for desktop PCs, industrial data loggers, GPS navigation systems, and multifunction printers requiring stable component supply, industrial temperature operation, and integrated USB expansion with flash media support.
Supply support for USB2640I-HZH-02 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 leading provider of microcontroller, analog, FPGA, and connectivity solutions, serving industrial, automotive, communications, and consumer markets with high-reliability silicon and development tools.
The USB2640I-HZH-02 belongs to Microchip's USB Hub + Flash Media Controller family, designed specifically for embedded systems needing compact, high-throughput, multi-format flash card readers with USB port expansion - targeting space-constrained, thermally demanding applications.
FAQ
What flash media formats does the USB2640I-HZH-02 support?
The USB2640I-HZH-02 supports Secure Digital 2.0 (including HC and HS variants), MultiMediaCard 4.2 (with streaming mode), 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. All are accessed via a shared multiplexed pin interface requiring a combo socket. Support for xD-Picture Card requires a license from the xD-Picture Card License Office.
Does the USB2640I-HZH-02 require an external crystal or clock source?
No, the USB2640I-HZH-02 includes an on-board 24 MHz crystal driver circuit and can operate with a standard 24 MHz crystal connected between XTAL1 and XTAL2. Alternatively, it accepts an external 24 MHz 1.8 V clock applied to XTAL1 (CLKIN) with a resistor divider, allowing clock source flexibility without adding discrete oscillators.
How is configuration handled for the USB2640I-HZH-02?
Configuration for the USB2640I-HZH-02 is performed via external I²C EEPROM or SPI Flash, supporting vendor ID, product ID, language ID, serial number, and LED blink parameters. The device also enables field updates of this configuration data via USB - no hardware rework or programming fixtures required after deployment.
What is the role of the CRD_PWR pin on the USB2640I-HZH-02?
The CRD_PWR pin on the USB2640I-HZH-02 provides 3.3 V power (up to 200 mA) to the multiplexed flash media slot. It is mandatory for powering xD-Picture Card devices to meet voltage specification requirements. When not used for card power, CRD_PWR functions as a general-purpose I/O. Its behavior is controlled by bits 0–3 of Register A5h.
Can the USB2640I-HZH-02 operate in self-powered or bus-powered modes?
Yes, the USB2640I-HZH-02 supports both bus-powered and self-powered configurations. In bus-powered mode, it draws power from the upstream USB VBUS; in self-powered mode, it uses an external 3.3 V supply. Configuration is selectable via firmware settings, and port power control (individual or ganged) is fully programmable to match the target system's power architecture.
USB2640I-HZH-02 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 48-QFN (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
USB2640I-HZH-02 FAQ
1.How can I place an order for USB2640I-HZH-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for USB2640I-HZH-02 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 USB2640I-HZH-02 reliable?
The price and inventory of USB2640I-HZH-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USB2640I-HZH-02 is usually 5 days.
3.What payment methods are accepted for USB2640I-HZH-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB2640I-HZH-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB2640I-HZH-02?
USB2640I-HZH-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB2640I-HZH-02 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 USB2640I-HZH-02?
For technical support, including USB2640I-HZH-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB2640I-HZH-02 requirements.
6.How does Aetrix verify that USB2640I-HZH-02 is sourced from the original manufacturer or authorized distributors?
All USB2640I-HZH-02 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 USB2640I-HZH-02 meets industry standards.
7.What is the process for return or replacement of USB2640I-HZH-02?
All USB2640I-HZH-02 units undergo pre-shipment inspection (PSI). If there is an issue with USB2640I-HZH-02, 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 USB2640I-HZH-02 part is unused and in its original packaging.
Return procedure for USB2640I-HZH-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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