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USB2251i

Microchip
Part Number USB2251i
Manufacturer Microchip
Description Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Published Mar 16, 2016
Detailed Description USB2250/50i/51/51i Ultra Fast USB 2.0 Multi-Slot Flash Media Controller General Description The Microchip USB2250/50i/5...
Datasheet PDF File USB2251i PDF File

USB2251i
USB2251i

Overview
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 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), SmartMediaTM (SM), xD-Picture CardTM (xD)1, Memory Stick® (MS), Secure Digital (SD), and MultiMediaCardTM (MMC) families.
The 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.
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-multiplexed 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 1.
) xD-Picture Card not applicable to USB2251.
 2009 - 2015 Microchip Technology Inc.
• 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 - s...


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