The SST55LD017D high-performance ATA Flash Disk Controller offers sustained write performance up to 4.0 MB/sec. The SST55LD017D can directly support up to 5 flash media devices for up to 640 MB capacity or, through simple decoding logic, can support up to 32 flash media devices for up to 4 GB capacity. Users can select either an internal or external system clock option for optimal performance vs. the supply current. The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc. These specifications are subject to change without notice.