Silicon Motion SM3257 - Manual

Mobile Storage
Dyna Family
www.siliconmotion.com
This publication, including all photographs, illustrations and software, is protected under
international copyright laws, with all rights reserved. Neither this publication, nor any of the
material contained herein, may be reproduced without written consent of the manufacturer.
© Copyright 2011 Silicon Motion, Inc.
USB2.0 Flash Memory Controller
SM3257
The SM3257 is the latest USB Flash Disk controller
with highly compatibility, and best performance
intended for supporting Single-Channel MLC and TLC
NAND type Flash memory in one chip. Based on
0.152um fabricated technology and low power
consumption consideration, SM3257 complies with
USB power specification ver.2.0 for bus-powered
devices. For USB2.0 Flash Disk application, SM3257
supports high capacity up to 4 data Flash banks,
“Write Protect” function, PC boot-up from USB2.0
Flash Disk, Password protection, and Secured
Partitioning functions.
SM3257 controller also delivers extremely high data
transfer rate and correct data through reliable
13/24/40-bit ECC engine for the coverage of the
MLC/TLC flash read/write disturbance. By integrating
5V to 3.3V regulator and Power-on-Rest components,
it will help customers to save overall cost. SM3257 is
available with 48pins LQFP package, 48pins TQFP
package and 40pins QFN package with a
manufacturing-ready turnkey solution now.
Applications
 USB Flash Drive
 USB Solid State Disk
 Embedded Application
 High-Speed NAND Storage
Key Features
 Embedded crystal offers lower BOM cost
 1.8V low-power core operation
 Built-in 5V/3.3V and 3.3V/1.8V voltage regulators
 Complete compatibility with USB (Universal Serial
Bus) Specification Rev. 2.0
 Complies with USB Mass Storage Class
Specification Rev. 1.0
 USB Mass Storage Class Bulk-Only Transport
Protocol
 Complies with USB power specifications for bus-
powered devices
 Integrated 80C51-compatible, 8-bit
microprocessor with enhanced features
 Supports suspend mode and wake-up resume
 Configurable BCH error control coding (ECC)
 Supports MLC/TLC up to 4 NAND flash devices
 Supports the operating systems: Windows 7,
Windows Vista, Windows XP, Windows 2000,
Windows ME, Windows 98/98SE, Mac OS 9.x and
above, and Linux kernel 2.4 and above
 Supports Windows Vista and Windows 7
ReadyBoost function
 In System Programming (ISP) firmware update
capability
 Supports VID, PID, serial number, and vendor
information updates
 Supports LED indicator to indicate the USB Flash
Disk is in the Ready/Working mode
 Supports “Write Protect” security function to
protect the data in USB Flash Disk
 Available in LQFP/TQFP 48pin and QFN 40pin