Introduction
The ST72681 is a USB 2.0 high-speed Flash drive controller. The USB 2.0 high-speed interface including PHY and function supports USB 2.0 mass storage device class.
The mass storage controller interface (MSCI) combined with the Reed-Solomon encoder/decoder on-the-fly correction (4-byte on 512-byte data blocks) provides a flexible, high transfer rate solution for interfacing a wide of range NAND Flash memory device types.

FEATUREs
■ USB 2.0 interface compatible with mass storage device class
   – Integrated USB 2.0 PHYSupports USB high speed and full speed
   – Suspend and Resume operations
■ Mass storage controller interface (MSCI)
   – Supports all types of NAND Flash devices including ST, Hynix, Samsung, Toshiba, Micron, Renesas
   – Reed-Solomon encoder/decoder on-the-fly correction (4 bytes of a 512-byte block)
   – Flash identification support
   – Up to 12 MB/s for read and 8 MB/s for write operations in single channel
   – Up to 4 NAND devices supported in a single channel
■ Embedded ST7 8-bit MCU
■ Supply management
   – 3.3 V operation
   – Integrated 3.3-1.8 V voltage regulator
■ USB 2.0 low-power device compliant
   – Less than 100 mA during write operation with two NAND Flash devices
   – Less than 500 µA in suspend mode
■ AutoRun CDROM partition support
■ Bootability support (HDD mode)
■ Clock management
   – Integrated PLL for generating core and USB 2.0 clock sources using an external 12 MHz crystal oscillator
■ Data protection
   – Write protect switch control
   – Public/private partitions support
■ Production tool device configurability:
   – USB vendor ID/product ID (VID/PID), serial number and USB strings with foreign language support
   – SCSI strings
   – One or two LED outputs
   – Adjustable NAND Flash bus frequency to reach highest performance
■ Code update in the NAND Flash memory
■ TQFP48 7x7 ECOPACK® package
■ Development support
   – Complete reference design including schematics, BOM and gerber files
■ Supports Windows (Vista, XP, 2000, ME), Linux and MacOS. Drivers available for Windows 98 SE