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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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USB2251 Folha de dados(PDF) 1 Page - Microchip Technology |
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USB2251 Folha de dados(HTML) 1 Page - Microchip Technology |
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1 / 43 page  2009 - 2015 Microchip Technology Inc. DS00002005A-page 1 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), SmartMediaTM (SM), xD-Picture CardTM (xD)1, Memory Stick® (MS), Secure Digital (SD), and MultiMe- diaCardTM (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. 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 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 • 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 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 Applications • Flash Media Card Reader/Writer • Printers • Desktop and Mobile PCs • Consumer A/V • Media Players/Viewers • Vista ReadyBoostTM 1.) xD-Picture Card not applicable to USB2251. USB2250/50i/51/51i Ultra Fast USB 2.0 Multi-Slot Flash Media Controller |
Nº de peça semelhante - USB2251 |
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Descrição semelhante - USB2251 |
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