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SST55LD017A
ATA Flash Disk Controller
SST has issued an EOL for this product.
SST's ATA Flash Disk Controller is the heart of a high-performance, flash media-based data storage system. This technology suits solid-state, mass-storage applications -- offering new, expanded functionality while enabling smaller, lighter designs with lower power consumption. The ATA/IDE interface is widely used in such products as portable and desktop computers, digital cameras, music players, handheld data collection scanners, PDAs, handy terminals, personal communicators, audio recorders, monitoring devices, and set-top boxes. Utilizing SST's proprietary SuperFlash memory technology, the ATA Flash Disk Controller is preprogrammed with an embedded flash file system which, upon initial power-up, recognizes the flash media devices, sets up a bad block table, performs all necessary handshaking routines for media support, and, finally, performs the low-level format. This technology enables a very fast, completely seamless integration of flash drives into an embedded design. The ATA Flash Disk Controller integrates an on-chip clock circuitry and Serial Communication Interface (SCI) for system reset and user customization. The SST55LD017A is a standard performance ATA Flash Disk Controller supporting capacities up to 128 MB. SST55LD017B is a high-performance ATA Flash Disk Controller with sustained write performance up to 2.4 MB/sec. SST55LD017C/D are a super high-performance ATA Flash Disk Controllers with sustained write performance of up to 4.0 MB/sec. The SST55LD017B/C/D can support up to 5 flash media devices directly for a maximum capacity of 640 MByte. By using an external decoder, the SST55LD017B and SST55LD017C can support up to 16 flash media devices for the equivalent capacity of 2 GByte. The SST55LD017D can support up to 32 flash media devices through an external decoder for an equivalent capacity of 4 GByte. All ATA Flash Disk Controllers come preprogrammed with a 10-byte unique Serial ID. For even greater system security, the user has the option of programming an additional 10 Bytes of ID space to create a unique, 20-byte ID. The controller also offers a WP# pin to protect data stored on flash media from unauthorized overwrites. Users can select either an internal or external system clock option for optimal performance/power consumption. In addition, the SST55LD017D offers added security protection for confidential information stored in the flash media. It allows up to four protection zones which users can set to be read-only or hidden (read-disabled) and the controller can access through a password-protected command. The ATA Flash Disk Controllers come packaged in an industry-standard, 100-lead TQFP package for easy integration into an SMT manufacturing process.
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