Expandable Storage

Dyna Family

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SM3271-PB-201910

High Speed USB2.0 Flash Memory Controller

SM3271

The SM3271 is a feature-enhanced USB2.0 Flash

Disk controller with high compatibility and best

performance designed to support 2D NAND and 3D

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 SM3271 provides

write protect, PC boot-up from USB2.0 Flash Disk,

password protection, secured partitioning functions,

etc.

The SM3271 delivers high data transfer rate, and

ensures data accuracy and reliability with the

powerful ECC engine which can overcome the

read/write disturbances in 2D NAND and 3D NAND

flash. By integrating an embedded crystal, regulators

and other components, the controller can reduce

customer overall cost at a system level. The SM3271

is available for LQFP 48-pin package with a

manufacturing-ready turnkey solution.

Applications

 USB Flash Drive

 USB Solid State Disk

 Embedded Application

 High-Speed NAND Storage

Key Features

 Embedded crystal offers lower BOM cost

 1.2V low-power core operation

 Built-in 3.3V/1.8V/1.2V voltage regulators 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 high-speed DDR Toggle NAND and

ONFI NAND flash

 Supports 2D NAND and 3D NAND up to 8 NAND

flash devices

 Low Grade NAND support

 Supports the operating systems: Windows

10,Windows 7 and Windows XP, Mac OS 10.x

and above, and Linux kernel 2.4 and above

 Supports Windows 10 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