USB2641-HZH-02

Specialized Overview

The Microchip USB2641-HZH-02 is a USB 2.0 compliant Hi-Speed hub controller with an integrated mass storage class peripheral controller for flash media. It features three downstream ports: one dedicated to internally connected ultra-fast flash media reader/writer and two exposed ports for external peripheral expansion. The device supports SD, MMC, and Memory Stick formats, excluding xD-Picture Card. It includes a single 3.3V supply source with internal 1.8V regulation, 9KB RAM, 64KB ROM, and an 8051 microprocessor. Key programmable features include PortMap, PortSwap, and PHYBoost.

Specialized Feature Summary

• Integrated flash media reader/writer supporting multiplexed card interfaces optimized for combo sockets
• Programmable PortMap for flexible port mapping and disable sequencing across multiple platform designs
• PortSwap capability allowing configurable differential-pair pin locations to ease PCB layout
• PHYBoost feature providing programmable USB transceiver drive strength to recover signal integrity

Specialized Applications

• Desktop and mobile PCs
• Personal mobile devices
• Printers
• GPS navigation systems
• Media Players/Viewers

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Ensure compatibility with the required flash media formats, noting that xD-Picture Card support is not applicable for this model variant. Confirm configuration requirements for I2C or SPI ROM sources during procurement planning.

Specialized Selection Notes

Select this component when a combined USB hub and flash media controller is required in a single package. It is suitable for designs needing support for SD, MMC, and Memory Stick standards without xD-Picture Card functionality. Consider the available OEM selectable features such as compound device support and individual port power control when defining system architecture.

Specialized Part Context

This part belongs to the USB2640/USB2641 family of ultra-fast USB 2.0 multi-format flash media controllers and USB hub combos. The USB2641 variant specifically excludes xD-Picture Card support compared to the USB2640. Both models share identical pinouts and core functionalities, differing primarily in supported media protocols.

Specialized Replacement Considerations

The USB2640 serves as a functional substitute if xD-Picture Card support is required. Verify pin compatibility and firmware configuration differences before substitution.