Datasheet > USB2251-NU-05

USB2251-NU-05

更新时间： 2025-07-13 20:01:47

品牌	Logo	应用领域
美国微芯 - MICROCHIP		外围集成电路
页数	文件大小	规格书
43页	354K
描述
UNIVERSAL SERIAL BUS CONTROLLER

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技术参数
数据手册

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USB2251-NU-05 技术参数

生命周期：	Obsolete	包装说明：	TFQFP,
Reach Compliance Code：	compliant	HTS代码：	8542.31.00.01
风险等级：	5.14	总线兼容性：	I2C
JESD-30 代码：	S-PQFP-G128	长度：	14 mm
端子数量：	128	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	TFQFP	封装形状：	SQUARE
封装形式：	FLATPACK, THIN PROFILE, FINE PITCH	座面最大高度：	1.2 mm
最大供电电压：	3.6 V	最小供电电压：	3 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	0.4 mm
端子位置：	QUAD	宽度：	14 mm
uPs/uCs/外围集成电路类型：	BUS CONTROLLER, UNIVERSAL SERIAL BUS	Base Number Matches：	1

USB2251-NU-05 数据手册

USB2250/50i/51/51i

Ultra Fast USB 2.0 Multi-Slot Flash Media Controller

• Extended configuration options

General Description

- xD player mode operation

- Socket switch polarities, etc.

• Media Activity LED

• On board 24 MHz crystal driver circuit

• Optional external 24 MHz clock input

- 4 Independent internal card power FETs

- 200 mA each

- "Fold-back" short circuit protection

• 8051 8-bit microprocessor

- 60 MHz - single cycle execution

- 64 KB ROM | 14 KB RAM

The Microchip USB2250/50i/51/51i is a USB 2.0 com-

pliant, Hi-Speed mass storage class peripheral control-

ler intended for reading and writing to more than 24

popular flash media formats from the CompactFlash^®

(CF), SmartMedia^TM(SM), xD-Picture Card^TM(xD)¹,

Memory Stick^®(MS), Secure Digital (SD), and MultiMe-

diaCard^TM(MMC) families.

The USB2250/50i/51/51i is a fully integrated, single

chip solution capable of ultra high performance opera-

tion. Average sustained transfer rates exceeding 35

MB/s are possible if the media and host can support

those rates.

• Internal regulator for 1.8 V core operation

• Optimized pinout improves signal routing which

eases implementation for improved signal integ-

rity

Highlights

• 128-pin VTQFP (14x14 mm) RoHS compliant

package

• Targeted for applications in which single or

"combo" media sockets are used

• Supports multiple simultaneous card insertions

• 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

OEM Selectable

• Vendor, product, and language IDs

• Manufacturer ID and product strings (28 charac-

ter)

• Serial number string (12h digit max)

• Customizable vendor specific data by optional

use of external serial EEPROM

• Bus- or self-powered selection

• LED blink interval or duration

• Internal power FET configuration

• Pipelined hardware support for access to non-

self-mapped media

• Order number with “i” denotes the version that

supports the industrial temperature range of -40ºC

to 85ºC

Software Features

• Optimized for low latency interrupt handling

• Reduced memory footprint

• Device Firmware Upgrade (DFU) support of exter-

nal EEPROM or External Flash

- Assembly line support

- End user field upgrade support

- DFU Package consists of driver, firmware,

sample DFU application and source code,

DFU driver API

Hardware Features

• Single chip flash media controller with non-multi-

plexed interface for independent card sockets

• Flash Media Specification Revision Compliance

- CompactFlash 4.1

- Secure Digital 2.0

- MultiMediaCard 4.2

• Optional custom firmware with up to 128 KB

external ROM

• MMC Streaming Mode support

- Memory Stick 1.43

- Memory Stick Pro Format 1.02

- Memory Stick Duo Format 1.10

- Memory Stick Pro-HG Duo Format 1.01

- xD-Picture Card 1.2

Applications

• Flash Media Card Reader/Writer

• Printers

• Desktop and Mobile PCs

• Consumer A/V

- SmartMedia 1.3

• Media Players/Viewers

• Vista ReadyBoost^TM

1.) xD-Picture Card not applicable to USB2251.

 2009 - 2015 Microchip Technology Inc.

DS00002005A-page 1

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中文翻译

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与USB2251-NU-05相关器件

型号	品牌	获取价格	描述	数据表
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
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
USB2259	SMSC	获取价格	Ultra Fast USB 2.0 Multi-Format Flash Media Controller
USB2380-AB25NIG	PLX	获取价格	PCI Bus Controller, CMOS, 10 X 10 MM, 0.40 MM PITCH, LEAD FREE, QFN-88
USB2412	MICROCHIP	获取价格	The USB2412 is a low-power, single Transaction Translator (STT) USB 2.0 hub controller IC
USB2412	SMSC	获取价格	2-Port USB 2.0 Hi-Speed Hub Controller
USB2412-DZK	SMSC	获取价格	2-Port USB 2.0 Hi-Speed Hub Controller

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