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Hi-peed USB-to-SD card ups read/write speed

Posted: 09 Nov 2009 ?? ?Print Version ?Bookmark and Share

Keywords:SD card reader? Hi-Speed USB? consumer electronics?

MAX14502 USB-to-SD card bridge

Maxim Integrated Products introduces a Hi-speed USB-to-SD card bridge that increases read/write speed by up to 40x in portable electronics.

The MAX14502 bypasses the slow processor of original (full-speed) USB applications then services the data transfer with an integrated processor. Thus, it eliminates the time-consuming and complicated task of developing a software driver, allowing designers to effortlessly add Hi-Speed USB to their applications. This device is suited for consumer electronics such as cellphones, PDAs, MP3 players, DSCs, and GPS devices.

The MAX14502 supports SDHC, and can operate with either one or two SD card ports. This IC preserves valuable I/Os by allowing simple control through one GPIO, or an I?C interface for the 2-port option.

This device is fully specified over the -40C to +85C extended temperature range and is available in Pb-free packages. The one-port version is packaged in a 5mm x 5mm, 40-pin TQFN, while the two-port version is available in a 3.23mm x 3.5mm, 56-bump WLP. Prices start at $7 (1,000-up, FOB USA).

For application notes on USB click here.

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