SLUFD4GU2U STEC, SLUFD4GU2U Datasheet - Page 7

• Manufacturer Part Number: SLUFD4GU2U
• Manufacturer: STEC

Specifications of SLUFD4GU2U

• Lead Free Status / RoHS Status: Compliant

SLUFDxGU2U(I)
Datasheet
3.0 Theory of Operation
3.1
The Industrial Grade UFD uses STEC’s U2, state-of-the art, USB 2.0 controller, and is combined with SLC
NAND Flash for optimal device reliability. The controller’s firmware supports the latest NAND flash
technology from multiple vendors, and is optimized for the highest performance and reliability.
The USB controller consists of the functional blocks as shown in Figure 3. The blocks are described in the
paragraphs following the figure.
3.1.1 Controller Internal Components
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Microcontroller which serves as the hardware backbone for the flash controller algorithm.
USB 2.0 Interface Controller with high speed (480 Mbps) device function. This block interfaces with the
host system via the USB interface.
Flash Interface Controller that serves as the interface to the NAND flash components. It supports all
the major NAND flash memory manufacturers.
Flash Storage Management Algorithm Block is responsible for the flash management, including wear
leveling, bad block management, and Error Correction.
ECC block is responsible for on-the-fly error and correction.
Sector Buffer for optimized performance.
SRAM for running controller firmware fast and efficient.
ROM for storing controllers boot code.
Block Diagram
Figure 3: Controller block diagram
61000-05387-114, January 2010
Industrial Grade USB Flash Drive
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