SN11088
2003/7/8
ver 0.3
SN11088
Third Generation USB1.1 Flash Memory Controller
Version 0.1
2003/10/8
1 General Description
SN11088 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 SN11085/86/87, the current user of SN11085/86/87 can easily upgrade to
SN11088 with no engineering effort needed at all. With all the features inherited from
SN11085/86/87 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 11088 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, 4G, and 8G bits flashes, SN11088 can be used to
build up a storage device up to 4 Giga bytes. To reduce the total cost of the end product,
SN11088 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 SN11088.
With keeping all the versatile functions provided by older products, like programmable LED
speed, FDD support, etc., SN11088 now provides CD-ROM support and separate write
protect features for different LUN, so the product makers can put their SW and manuals in
the flash directly without accompanying the extra CD-ROM, reducing the cost more.
Therefore, in total of 6 kind of different configurations can be selected by the flash disk
1
SONIX [ SONIX TECHNOLOGY COMPANY ]
