SM3257EN Datasheet PDF – Flash Memory Controller

Part Number: SM3257EN

Function: High Speed USB2.0 Flash Memory Controller

Package: LQFP/TQFP 48pin

Manufacturer: Silicon Motion

Image :
SM3257EN Image


The SM3257EN is a feature-enhanced USB2.0 Flash Disk controller with high compatibility and best  performance designed to support MLC and TLC NAND flash. The controller also supports high speed  ONFI 2.x and Toggle mode NAND. Compliant with USB version2.0 specification and USB Mass Storage Class version 1.0 specification, the SM3257EN provides write protect, PC boot-up from USB2.0 Flash  Disk, password protection, secured partitioning functions, etc.

Reference Site:

SM3257EN usb image datasheet



1. Embedded crystal offers lower BOM cost
2. 1.8V low-power core operation
3. Built-in 5V/3.3V and 3.3V/1.8V voltage regulators
4. Complete compatibility with USB (Universal Serial Bus) Specification Rev. 2.0
5. Complies with USB Mass Storage Class Specification Rev. 1.0
6. USB Mass Storage Class Bulk-Only Transport Protocol
7. Complies with USB power specifications for bus-powered devices

SM3257 datasheet


1. USB Flash Drive
2. USB Solid State Disk
3. Embedded Application
4. High-Speed NAND Storage


SM3257EN Datasheet

SM3257EN pdf