SLUFDM4GU1UI-A STEC, SLUFDM4GU1UI-A Datasheet - Page 7

• Manufacturer Part Number: SLUFDM4GU1UI-A
• Description: Solid State Drives - SSD USB 4GB MEMORY BOARD
• Manufacturer: STEC

Specifications of SLUFDM4GU1UI-A

• Product Category: Solid State Drives - SSD
• Rohs: yes
• Product: Flash Disk Modules
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

SLUFDMxxx(M/G)U1U(I)-y
Datasheet
3.0 Theory of Operation
3.1
The USB Flash Disk Module uses STEC’s proprietary state-of-the art USB 2.0 controller, 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 Flash Disk Module controller consists of the functional blocks shown in
Figure 4 and described below.
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 Detection and Correction.
EDC/ECC block is responsible for on-the-fly error detection and correction.
Sector Buffer for optimized performance.
SRAM for running controller firmware fast and efficient.
ROM for storing controllers boot code.
Block Diagram
Figure 4: Controller block diagram
61000-03606-121, May 2008
USB Flash Disk Module
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