SN11086

USB 1.1 12 MHz 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
Low system clock (6MHz) to reduce EMI
Customized VID, PID, serial number, and 28 characters of Vendor/Product/Revision
string supported within flash or external EEPROM.
EEPROM in system programmable (ISP) capability
Support Samsung and Toshiba NAND-type flash memory, from 32Mbits to 1Gbits
Support new type of Samsung NAND type flash memory, from 1Gbits to 4Gbits
Real-time ECC correction circuit for data integrity and memory access speed acceleration
Embedded SRAM for logical-to-physical address translation to extend the life time of NAND-type flash
Support up to 8 NAND type flash memories are supported
Support up to 2 Gbytes of disk capacity
Embedded FIFO for upstream and downstream data transfer
Built-in power MOS to meet USB suspend requirement (500 uA)
Data transfer rate up to 1.5 MB/s (burst), 1.1 MB/s (read average)
LED indicator pin
Three modes of LED flashing patterns can be selected
PC boot up capability (host BIOS with USB ZIP/HDD boot up support is necessary)
Flash disk security function provided, up to 12 characters of password for high sensitive data protection from illegally access
Two types of security functions can be selected
ROM-type flash disk capability provided (permanent write protect)

SN11086 is a high-performance integrated circuit to access the NAND type Flash memory via the USB 1.1 bus. It provides a flexible and cost efficient single chip solution for external storage applications such as USB Disk (Flash Disk). With the capability to be pin-to-pin compatible to SN11085, the current user of SN11085 can easily upgrade to SN11086 with no engineering effort needed at all. With all the features inherited from SN11085 like the low 6MHz system clock to reduce the EMI, the embedded translation table to eliminate the cost of external memory, the Sonix proprietary randomization algorithm to extend the lifetime of flash memory and ensure the product robustness, and the real time ECC correction function,the SN 11086 adds several other unique features to reduce the cost of the end product and meet the customer's requirements.

To enrich the product line of the OEM manufacture, with the ability to support 8 pieces of flash memories and the new types of 2G bits flashes, SN11086 can be used to build up a storage device up to 2 Giga bytes. To reduce the total cost of the end product, SN11086 incorporates a power MOS inside to meet the current requirement (500 uA) in USB suspend state. The usage of EEPROM can also now be eliminated by the capability to program the customized vendor/product ID/string in the flash itself. Therefore, the total cost is reduced by upgrade from SN11085 to SN11086.

For fulfilling different customers' needs, SN11086 now provides several ways to build different end products. The first one is to provide different security functions. The OEM manufacturers can program one of the two ways in manufacturing via software. The flashing ways of LED can also be selected by software now. With these flexibilities, the manufacturers can easily build different products by using exactly the same components.

The USB Mass Storage Class compliance capability of SN11086 makes it a truly plug-and-play" device without vendor drivers under Windows 2000/ME/XP and Mac OS 9/10. SN11086 also provides PC boot up and data security function, which makes it an ideal replacement for the legacy floppy disk.