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USB2250-NU-04

产品描述usb 接口集成电路 ultra fast usb 2.12 flash media
产品类别半导体    其他集成电路(IC)   
文件大小966KB,共44页
制造商SMC
官网地址http://www.smc-diodes.com/
标准
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USB2250-NU-04概述

usb 接口集成电路 ultra fast usb 2.12 flash media

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USB2250/50i/51/51i
Ultra Fast USB 2.0 Multi-Slot
Flash Media Controller
PRODUCT FEATURES
The SMSC USB2250/50i/51/51i is a USB 2.0 compliant, Hi-
Speed mass storage class peripheral controller 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 MultiMediaCard
TM
(MMC) families.
The SMSC USB2250/50i/51/51i is a fully integrated, single
chip solution capable of ultra high performance operation.
Average sustained transfer rates exceeding 35 MB/s are
possible if the media and host can support those rates.
Datasheet
GPIO configuration and polarity
— Up to 11 GPIOs (based on configuration) for special
function use
— Four GPIO’s with up to 200 mA drive
General Description
16 additional GPIO's are available if CF is not used
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
General Features
128-pin VTQFP (14x14 mm) lead-free 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
Single chip flash media controller with non-multiplexed
interface for independent card sockets
Flash Media Specification Revision Compliance
— CompactFlash 4.1
— Secure Digital 2.0
— MultiMediaCard 4.2
Internal regulator for 1.8 V core operation
Optimized pinout improves signal routing which eases
implementation for improved signal integrity
OEM Selectable Features
Vendor, product, and language IDs
Manufacturer ID and product strings (28 character)
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
Optimized for low latency interrupt handling
Reduced memory footprint
Device Firmware Upgrade (DFU) support of external
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
Software Features
Hardware Features
SDIO and 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
Optional custom firmware with up to 128 KB external
ROM
Applications
Extended configuration options
— xD player mode operation
— Socket switch polarities, etc.
Media Activity LED
Flash Media Card Reader/Writer
Printers
Desktop and Mobile PCs
Consumer A/V
Media Players/Viewers
Vista ReadyBoost
TM
1.) xD-Picture Card not applicable to USB2251.
SMSC USB2250/50i/51/51i
DATASHEET
Revision 2.0 (09-29-09)
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