Microchip's USB4640 is the world's first Hi-Speed Inter-Chip (HSIC) enabled USB 2.0 hub and Flash media card reader combo solution. The 480Mbps, 2-pin HSIC 1.O-compliant upstream port provides an ultra-fast interface between an HSIC-enabled host and today's most popular Flash media cards as well as a versatile, cost-effective and power-efficient USB 2.0 hub controller with two downstream ports for Hi-Speed/Full-Speed/Low-Speed USB port expansion. HSIC's digital interconnect bus bypasses the traditional USB analog PHY, reducing power consumption while maintaining transparency to the USB drivers and software.

The USB4640 serves as a fully-integrated, single-chip solution combining USB hub expansion with ultra high-performance Flash card media reader/writer capabilities. Average sustained Flash media transfer rates exceeding 35 MB/s* are possible if the media and host can support those rates. The Flash media controller allows read/write capability to Flash media formats from the following families: xD-Picture Card? (xD); Memory Stick? (MS); Secure Digital (SD); MultiMediaCard? (MMC).

*Results are based on actual measurements on evaluation platforms developed by Microchip, and are meant only as a general guideline, not a guarantee. Actual customer results may vary based on a number of factors, including board layout and measurement technique.

Microchip makes the following part-numbered device available for purchase only by customers who are xD-Picture Card licensees: USB4640. By purchasing or ordering any of such devices, Buyer represents, warrants, and agrees that Buyer is a duly licensed Licensee under an xD-Picture Card&rade; License Agreement with Fuji Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation; and that Buyer will maintain in effect such xD-Picture Card license and will give Microchip reasonable advance notice of any termination or expiration of such xD-Picture Card license, but in no event less than five days advance notice. Microchip may discontinue making such devices available for purchase by Buyer and/or discontinue further deliveries of such devices if such xD-Picture Card license shall expire, terminate, or cease to be in force, or if Buyer is or becomes in default of such xD-Picture Card license.

Highlights

  HSIC upstream and USB 2.0 hub controller with two exposed USB downstream ports for external peripheral expansion

  Internally connected ultra-fast Flash media reader/writer

  Integrated hub and Flash media card reader combo solution minimizes footprint by approximately 40% compared to prior Microchip discrete devices

  Configures internal code using an external I2C EEPROM and supports external code using an SPI Flash ROM

  Supports commercial (0° to 70°C) and industrial (-40° to 85°C) temperature ranges

  48-pin QFN RoHS-compliant package

Target Applications

  Tablet PCs

  Digital TVs

  Netbooks/Mobile Internet Devices (MIDs)

  Desktop and Mobile PCs

  Set-top Boxes

  Gaming Consoles

  Printers

  Media Players/Viewers

  Digital Photo Frames

  Monitors

  Industrial Products