Electronic Design

USB Flash Media Controller Expands Power Headroom

Consuming less than 55 mA, the USB97C223-bus-powered USB 2.0 memory-card controller leaves plenty of power for additional features. The USB 2.0 standard allows a device to draw up to 100 mA from the bus. The controller supports nine flash media formats, including the new 4-bit parallel Memory Stick Pro format from Sony (www.sony.com). Read and write transfer rates are 3 and 2.4 Mbytes/s, respectively. Flash media performance limits the speeds. The single-chip solution incorporates a 64-kbyte ROM. The USB97C223-NE comes in a 128-pin TQFP, and pricing starts at $4.29.


Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.