SLUFD128MU1U-A STEC, SLUFD128MU1U-A Datasheet - Page 6

• Manufacturer Part Number: SLUFD128MU1U-A
• Manufacturer: STEC
• Type: USB Flash Driver

Specifications of SLUFD128MU1U-A

• Density: 128MByte
• Operating Supply Voltage (typ): 5V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Package Type: Not Required
• Mounting: Socket
• Pin Count: 4
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Programmable: Yes
• Lead Free Status / RoHS Status: Compliant

SLUFDxxx(M/G)U1U(I)-y
Datasheet
3.0 Theory of Operation
3.1
The Industrial Grade UFD 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 controller consists of the functional blocks shown in Figure 4 and described below.
3.1.1 Controller Internal Components
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
61000-04536-105, May 2007
Figure 4: Controller block diagram
Industrial Grade USB Flash Drive
6