USB2250I,USB2250I pdf中文资料,USB2250I引脚图,USB2250I电路-Datasheet-电子工程世界

文档预览

USB2250/50i/51/51i

Ultra Fast USB 2.0 Multi-Slot Flash Media Controller

General Description

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

(SM), xD-Picture Card

(xD)

Memory Stick

(MS), Secure Digital (SD), and MultiMe-

diaCard

(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.

• Extended configuration options

- 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

• 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

• 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

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

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

• Optional custom firmware with up to 128 KB

external ROM

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

• 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

- SmartMedia 1.3

Applications

•

Flash Media Card Reader/Writer

Printers

Desktop and Mobile PCs

Consumer A/V

Media Players/Viewers

Vista ReadyBoost

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



2009 - 2015 Microchip Technology Inc.

DS00002005A-page 1

USB2250/50i/51/51i

TO OUR VALUED CUSTOMERS

It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip

products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and

enhanced as new volumes and updates are introduced.

If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via

E-mail at

docerrors@microchip.com.

We welcome your feedback.

Most Current Data Sheet

To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:

http://www.microchip.com

You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.

The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).

Errata

An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur-

rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the

revision of silicon and revision of document to which it applies.

To determine if an errata sheet exists for a particular device, please check with one of the following:

• Microchip’s Worldwide Web site;

http://www.microchip.com

• Your local Microchip sales office (see last page)

When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are

using.

Customer Notification System

www.microchip.com

to receive the most current information on all of our products.

DS00002005A-page 2



2009 - 2015 Microchip Technology Inc.

USB2250/50i/51/51i

Table of Contents

1.0 Introduction ..................................................................................................................................................................................... 4

2.0 Pin Configuration ............................................................................................................................................................................ 6

3.0 Block Diagram ................................................................................................................................................................................. 7

4.0 Pin Table ......................................................................................................................................................................................... 8

5.0 Pin Descriptions ............................................................................................................................................................................ 10

6.0 Pin Reset State Table ................................................................................................................................................................... 17

7.0 Configuration Options ................................................................................................................................................................... 21

8.0 AC Specifications .......................................................................................................................................................................... 32

9.0 DC Parameters ............................................................................................................................................................................. 34

10.0 Package Outline .......................................................................................................................................................................... 38

Appendix A: Data Sheet Revision History ........................................................................................................................................... 39

Product Identification System ............................................................................................................................................................. 40

The Microchip Web Site ...................................................................................................................................................................... 41

Customer Change Notification Service ............................................................................................................................................... 41

Customer Support ............................................................................................................................................................................... 41



2009 - 2015 Microchip Technology Inc.

DS00002005A-page 3

USB2250/50i/51/51i

1.0

INTRODUCTION

The Microchip USB2250/50i/51/51i is a flash media card reader solution fully compliant with the USB 2.0 specification.

All required resistors on the USB ports are integrated into the device. This includes all series termination resistors on

D+ and D– pins and all required pull-down and pull-up resistors. The over-current sense inputs for the downstream fac-

ing ports have internal pull-up resistors.

Hardware Features

•

Single chip flash media controller

USB2250/USB2251 supports the commercial temperature range of 0°C to +70°C

USB2250i/USB2251i supports the industrial temperature range of -40°C to +85°C

8051 8-bit microprocessor

- 60 MHz - single cycle execution

- 64 KB ROM |14 KB RAM

Integrated regulator for 1.8 V core operation

Flash Media Card Specification Revision Compliance

Compact Flash 4.1

- CF UDMA Modes 0-4

- CF PIO Modes 0-6

Secure Digital 2.0

- HS-SD and HC-SD

- TransFlash™ and reduced form factor media

MultiMediaCard 4.2

- 1/4/8 bit MMC

Memory Stick 1.43

Memory Stick Pro Format 1.02

Memory Stick Pro-HG Duo Format 1.01

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

Memory Stick Duo 1.10

Smart Media 1.3

xD-Picture Card 1.2

•

Software Features

• If the OEM is using an external EEPROM, the following features are available:

- Customizable vendor, product, and device ID’s

- 12-hex digits maximum for the serial number string

- 28-character manufacturer ID and product strings for the flash media reader/writer



2009 - 2015 Microchip Technology Inc.

DS00002005A-page 4

USB2250/50i/51/51i

1.1

ATA:

CFC:

FET:

LUN:

MMC:

MSC:

PLL:

RoHS:

RXD:

SDC:

SIE:

SMC:

TXD:

UART:

UCHAR:

UINT:

VTQFP:

Acronyms

Advanced Technology Attachment

Compact Flash Controller

Field Effect Transistor

Logical Unit Number

MultiMediaCard

Memory Stick Controller

Phase-Locked Loop

Restriction of Hazardous Substances Directive

Received eXchange Data

Secure Digital Controller

Serial Interface Engine

SmartMedia Controller

Transmit eXchange Data

Universal Asynchronous Receiver-Transmitter

Unsigned Character

Unsigned Integer

Very Thin Quad Flat Package

True IDE Mode:

True Integrated Drive Electronics Mode

DS00002005A-page 5



2009 - 2015 Microchip Technology Inc.