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USB2240 Datasheet, PDF (1/43 Pages) SMSC Corporation – Ultra Fast USB 2.0 Multi-Format Flash Media Controller | |||
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USB224X
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash
Media Controllers
Highlights
The Microchip USB224x is a USB 2.0 compliant, Hi-
Speed bulk only1 mass storage class peripheral con-
troller intended for reading and writing to popular flash
media from the xD-Picture CardTM (xD)2, Memory
Stick® (MS), Secure Digital (SD), and MultiMedia-
CardTM (MMC) families.
The USB224x is a fully integrated, single chip solution
capable of ultra high performance operation. Average
sustained transfer rates exceeding 35 MB/s are possi-
ble if the media and host can support those rates. The
USB2244/44i includes provisions to read/write secure
media formats.
General Features
⢠Low pin count 36-pin QFN (6x6 mm) RoHS com-
pliant package
⢠USB2240/40I/41/41I
- Targeted for applications in which single or
"combo" media sockets are used
⢠Hardware-controlled data flow architecture for all
self-mapped media
⢠Pipelined hardware support for access to non-
self-mapped media
⢠Order number with âIâ denote the products that
support the industrial temperature range of -40ºC
to 85ºC
⢠Support included for secure media format on a
licensed, customized basis
- USB2244/44I: SD Secure
Hardware Features
⢠Single chip flash media controller with
- USB2240/40I/41/4I: multiplexed interface for
use with âcomboâ card sockets
- USB2244/44I: SD/MMC flash media reader/
writer
⢠MMC Streaming Mode support
⢠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 input3
⢠Internal card power FET
- 200 mA
- "Fold-back" short circuit protection
⢠8051 8-bit microprocessor
- 60 MHz - single cycle execution
- 64 KB ROM | 14 KB RAM
⢠Supports a single external 3.3 V supply source;
internal regulators provide 1.8 V internal core volt-
age for additional bill of materials and power sav-
ings
⢠Optimized pinout improves signal routing which
eases implementation for improved signal integ-
rity
Flash Media Specification Compliance
⢠Secure Digital 2.0
- HS-SD, SDHC
- TransFlashTM and reduced form factor media
⢠MultiMediaCard 4.2
- 1/4/8-bit MMC
⢠Memory Stick Formats
- MS 1.43, Pro 1.02, Duo 1.10
- Pro-HG Duo 1.01
âMS, MS Duo, HS-MS, MS Pro-HG, MS Pro
⢠xD-Picture Card 1.2
Software Features
⢠Customizable vendor specific data
⢠Optimized for low latency interrupt handling
⢠Reduced memory footprint
Applications
⢠Flash media card reader/writers
⢠Desktop and mobile PCs
⢠Printers
⢠Consumer A/V and media players/viewers
⢠Compatible with
âMicrosoft® VistaTM and Vista ReadyBoostTM
âWindows® XP, ME, 2K SP4
âApple Mac OSx®
âLinux Mass Storage Class Drivers
1.Bulk only is not applicable to USB2240/40i/41/41i.
2.xD-Picture Card is not applicable to USB2241/41i.
ï£ 2010 - 2015 Microchip Technology Inc.
3.Only applicable to USB2240/40i/41/41i.
DS00001979A-page 1
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