USB2641I-HZH-02

Specialized Overview

The Microchip USB2641I-HZH-02 is an industrial temperature range USB 2.0 compliant Hi-Speed hub controller integrated with a mass storage class peripheral flash media reader/writer. It features three downstream ports: one dedicated to internally connected ultra-fast flash media and two exposed for external peripheral expansion. The device supports Secure Digital (SD), MultiMediaCard (MMC), and Memory Stick (MS) formats, excluding xD-Picture Card support found in the USB2640i variant. It operates within a -40°C to +85°C temperature range and utilizes a 48-pin QFN package.

Specialized Feature Summary

• Integrated USB 2.0 Hi-Speed hub controller with two exposed downstream ports for external device expansion.
• Built-in bulk-only mass storage class peripheral controller supporting SD, MMC, and Memory Stick media formats.
• Programmable PortMap and PortSwap features enabling flexible port mapping, disable sequencing, and differential-pair pin location alignment.
• Hardware-controlled data flow architecture with optional external firmware access via SPI interface.

Specialized Applications

• Desktop and mobile PCs
• Personal mobile devices
• Printers
• GPS navigation systems
• Industrial products

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product identification system to ensure correct package type and temperature grade. Confirm that the selected variant matches the required industrial operating range of -40°C to +85°C. Cross-reference the datasheet revision number to ensure compatibility with the latest silicon errata and documentation updates before finalizing procurement orders.

Specialized Selection Notes

Select this component when a combined USB hub and flash media reader solution is required for embedded designs. Ensure the design accommodates the 48-pin QFN package dimensions and thermal requirements. Verify that the target application does not require xD-Picture Card support, as this feature is exclusive to the USB2640i model. Confirm power supply constraints align with the single 3.3V input requirement and internal regulator specifications.

Specialized Part Context

This part belongs to the USB2640i/USB2641i family of USB 2.0 compliant Hi-Speed hubs with attached mass storage controllers. The USB2641I variant specifically omits xD-Picture Card support compared to the USB2640I, focusing on SD, MMC, and Memory Stick interfaces. Both models share identical pinouts and core functionalities, differing primarily in supported flash media protocols.

Specialized Replacement Considerations

The USB2640I-HZH-02 serves as a functional substitute if xD-Picture Card support is not required by the design. Other generic USB 2.0 hub controllers lack the integrated flash media reader capability and are not direct replacements without significant hardware redesign.

Specialized FAQ

Does the USB2641I support xD-Picture Cards?

No, the USB2641I does not support xD-Picture Cards. This functionality is available only in the USB2640I variant.

What is the maximum operating temperature for this device?

The device supports an industrial temperature range with a maximum operating temperature of +85°C.

How many downstream ports are available for external peripherals?

There are two exposed downstream ports available for external peripheral expansion; the third port is dedicated to the internal flash media reader.