Datasheet > USB2251

USB2251

更新时间： 2024-11-14 03:56:43

品牌	Logo	应用领域
SMSC		闪存控制器
页数	文件大小	规格书
36页	845K
描述
Ultra Fast USB 2.0 Multi-Format Flash Media Controller

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中文翻译

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数据手册

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USB2251 数据手册

USB2250/51/59

Ultra Fast USB 2.0 Multi-Format

Flash Media Controller

Datasheet

PRODUCT FEATURES

GPIO configuration and polarity

General Description

The SMSC USB2250/51/59 is a USB 2.0 compliant, high

speed Mass Storage Class Peripheral Controller intended for

reading and writing to more than 24 popular flash media

—

Up to 11 GPIOs (based on configuration) for special

function use: LED indicators, button inputs, power

control to memory devices, etc.

Four GPIO’s with up to 200 mA drive.

An additional 16 GPIO’s if CF is not used.

—

formats from the CompactFlash® (CF), SmartMedia (SM),

xD Picture Card

(xD) , Memory Stick

(MS), Secure

On Board 24MHz Crystal Driver Circuit

Optional external 24MHz clock input

4 Independent Internal Card Power FETs

—

8051 8-bit microprocessor

—

Digital (SD), and MultiMediaCard

(MMC) families.

The SMSC USB2250/51/59 is a fully integrated, single chip

solution capable of ultra high performance operation.

Average sustained transfer rates exceeding 35MB/s are

possible if the media and host can support those rates.

200mA each

"Fold-back" short circuit current protected

60MHz - single cycle execution

64KB ROM²; 14KB RAM

General Features

128-pin VTQFP lead-free RoHS compliant package

Targeted for applications in which single or "combo"

media sockets are used. Supports multiple simultaneous

card insertions

Internal Regulator for 1.8V core operation

Optimized pinout improves signal routing, easing

implementation and allowing for improved signal integrity.

OEM Selectable Features

Flexible assignment of number of LUNs and how card

types are associated with the LUNs

Hardware-controlled data flow architecture for all self-

mapped media

Pipelined hardware support for access to non-self-

mapped media

VID/PID/Language ID

28-character Manufacturer ID and Product string

12-hex digit (max) Serial Number string

Customizable Vendor specific data by optional use of

external serial EEPROM

Bus- or Self-powered selection

LED blink interval or duration

Hardware Features

Single Chip Flash Media Controller with non-multiplexed

interface for independent card sockets

Internal power FET configuration

Software Features

Flash Media Specification Revision Compliance

Optimized for low latency interrupt handling

Reduced memory footprint

—

Compact Flash Specification 4.1

–

CF UDMA Modes 0-4

CF PIO Modes 0-6

Device Firmware Upgrade (DFU) support of external

EEPROM or External Flash

—

Memory Stick Specification 1.43

Memory Stick Pro Format Specification 1.02

Memory Stick Pro-HG Duo Format Specification 1.01

Assembly line support

End user field upgrade support

DFU Package consists of driver, firmware, sample DFU

application and source code, DFU driver API

–

Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro

—

xD Picture Card 1.2

Smart Media Specification 1.3

Secure Digital 2.0

Optional (Mandatory on the USB2259) custom firmware

with external ROM (up to 128k)

Please see the USB2250/USB2251 Software Release

Notes for additional Software Features

–

HS-SD, HC-SD, TransFlash™ and reduced form factor

media

—

MultiMediaCard Specification 4.2

–

1/4/8 bit MMC

Applications

SDIO and MMC Streaming Mode support

Extended configuration options

Flash Media Card Reader/Writer

Printers

Desktop and Mobile PCs

Consumer A/V

—

xD player mode operation

Socket switch polarities, etc.

Media Players/Viewers

Vista ReadyBoost^TM

Media Activity LED

1.) xD Picture Card not applicable to USB2251

2.USB2259 uses external ROM only, internal ROM unavailable

SMSC USB2250/51/59

DATASHEET

Revision 2.6 (05-08-08)

12 3 4 5 6 7...36

中文翻译

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与USB2251相关器件

型号	品牌	获取价格	描述	数据表
USB2251I	MICROCHIP	获取价格	Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
USB2251I-NU-06	MICROCHIP	获取价格	USB2251I-NU-06
USB2251I-NU-06-CAG	MICROCHIP	获取价格	USB Bus Controller, CMOS, PQFP128
USB2251-NU-05	MICROCHIP	获取价格	UNIVERSAL SERIAL BUS CONTROLLER
USB2251-NU-06-CAG	MICROCHIP	获取价格	USB Bus Controller, CMOS, PQFP128
USB2251-NU-XX	MICROCHIP	获取价格	IDE COMPATIBLE, FLASH MEMORY DRIVE CONTROLLER, PQFP128, 14 X 14 MM, 1 MM HEIGHT, 0.40 MM P
USB2259	SMSC	获取价格	Ultra Fast USB 2.0 Multi-Format Flash Media Controller
USB-232	NI	获取价格	Serial Instrument Control Interfaces for USB
USB2380-AB25NIG	PLX	获取价格	PCI Bus Controller, CMOS, 10 X 10 MM, 0.40 MM PITCH, LEAD FREE, QFN-88
USB-2401	ETC	获取价格	4-CH 24-Bit Universal Input USB DAQ Modules

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