Description

SN11083A is a high-performance integrated circuit specifically designed to bridge USB and Flash memory. It provides a flexible and cost-efficient single-chip solution for external storage applications that utilize the convenience of USB. With its embedded translation table and proprietary randomization algorithm, SN11083A allows system makers to design high-performance NAND-type flash devices while keeping costs low. The real-time ECC correction ensures data integrity and maintains a high data transfer rate.

Specifications and features

• 12 MHz USB 1.1 full-speed compatible.
• USB 1.1 Mass Storage Class compliant.
• USB Mass Storage Class Bulk-Only Transport 1.0 supported.
• USB Mass Storage Class SCSI transparent command set supported.
• 12 characters of serial number and up to 28 characters of Vendor/Product/Revision supported with external EEPROM.
• Support NAND-type flash memory, from 4Mbytes to 128 Mbytes.
• Real-time ECC correction circuit to ensure data integrity and accelerate the access speed for NAND-type flash.
• Built-in SRAM to support logical-to-physical address translation for NAND-type flash to reduce cost and increase performance and reliability.
• Built-in FIFO for upstream and downstream data transfer.
• Data transfer rate up to 1.5 MB/s (burst), 1.1 MB/s (read average).
• LED lightening pin available.
• PC boot-up capability provided (PC BIOS needs to support USB ZIP boot-up) (version 2 only).
• No driver needed under Microsoft Windows ME/2000/XP, Mac OS 9.x/10.x.
• Driver support Microsoft Windows 98.
• Single 3.3V operation.
• 48 pin LQFP package.

Application Scenarios

SN11083A can be used in various external storage applications that require USB connectivity. It is suitable for USB storage systems, USB flash drives, and other devices that need to interface with NAND-type flash memory.

Comparison

• Provides a cost-efficient solution for external storage applications.
• Supports a wide range of NAND-type flash memory capacities.
• Real-time ECC correction ensures data integrity and high transfer rates.
• Built-in SRAM and FIFO optimize performance and reliability.
• Compatible with various operating systems.

• Requires PC BIOS support for USB ZIP boot-up (version 2 only).
• Driver support limited to Microsoft Windows 98.