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參數資料
| 型號： | WED7F144IDE33ADC25 |
| 廠商： | MICROSEMI CORP-PMG MICROELECTRONICS |
| 元件分類： | PROM |
| 英文描述： | 9M X 16 FLASH 3.3V PROM, DMA144 |
| 封裝： | SO-DIMM-144 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 167K |
| 代理商： | WED7F144IDE33ADC25 |
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White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
WED7GxxxIDE36
WED7GxxxIDE33
July, 2003
Rev. 0
PRELIMINARY*
White Electronic Designs Corp. reserves the right to change products or specications without notice.
DimmDrive Solid State IDE Flash Module with Power Failure
Protection* IDE36
DimmDrive Solid State IDE Flash Module IDE33
FEATURES
■ 144 pin SO-DIMMpackage with IDE pinouts
■ Plug-and-play solid state disk
■ NAND Flash memory technology by SanDisk
■ 3.3 V and 5.0 V power supply operation
■ 16MB – 2GB memory density
■ Low power consumption
■ ECC error correction
■ 512 Byte Sector compatible to IDE HD Drives
■ Supports true IDE mode
■ Commercial temperature range 0°C - +70°C
■ PFP Power Failure Protection Circuit (IDE36)
POWER BACKUP FEATURES (IDE36)
■ Added PFP circuit built in to preserve card integrity
during accidental power loss
■ PFP circuit may not prevent le/data loss if power
failure occurs during a long write operation
■ PFP control circuit prevents false operations after
power loss
■ Improves card integrity in applications with a high
risk of power failure
■ Minimum power backup time of 10ms
APPLICATIONS
■ Embedded systems
■ Internet Access Devices
■ Set Top Boxes
■ WEB Browser
■ Routers, Networking
■ WEB phones, car PC, DVD, HPC
■ Point-of-sale
■ Medical and Telcom
■ Other applications requiring embedded or solid
state storage
GENERAL DESCRIPTION
The DimmDrive WED7GxxxIDE36 is a high performance
single chip ash disk IDE module with Power Failure
Protection Circuit available in 144 Pin SO-DIMM
package.
The DimmDrive WED7GxxxIDE33 does not have the
additional PFP circuit.
The additional circuit provides protection against accidental
power loss. This circuit provides an internal power supply
and control logic to stop receiving data and complete
writing the last sector of data received. This is not intended
to be backup for the host system. It will only allow the
last sector received to nish writing and no more. It will
improve card integrity in applications with a high risk of
power failure. The read/write unit is 1 sector (512 bytes)
sequential access.
The module is based on SanDisk NAND Flash technology
and utilizes 128Mb, 256Mb, 512Mb or 1Gb memory
components to provide the maximum in module density.
The DimmDrive WED7GxxxIDE36/33 utilizes a SanDisk
Flash ChipSet controller for the SanDisk memory devices.
This interface allows a host computer to issue commands
to read or write blocks of memory in the Flash memory
array. The intelligence to manage the interface protocols,
data storage and retrieval as well as ECC, defect handling
and diagnostics are controlled by this device. Automatic
power management and clock control is handled by the
controller as well.
The DimmDrive WED7GxxxIDE36/33 module will have
the same functionality and capabilities of an intelligent ATA
(IDE) disk drive. Once the device has been congured
by the user, it appears to the host as a standard ATA disk
drive.
The on-board controller is a highly integrated solution
designed to handle all intelligent operations, even the rare
cases when new defects arise and need to be mapped
out or replaced by a spare. The hardware performs the
complicated task of ECC detection and correction and will
return good data to the host. The controller manages all
defects and errors and makes the Flash memory appear
* Patent pending
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