WED7GxxxIDE36
WED7GxxxIDE33
White Electronic Designs
PRELIMINARY*
DimmDrive Solid State IDE Flash Module with Power Failure
Protection* IDE36
DimmDrive Solid State IDE Flash Module IDE33
FEATURES
GENERAL DESCRIPTION
The DimmDrive WED7GxxxIDE36 is a high performance
single chip flash disk IDE module with Power Failure
Protection Circuit available in 144 Pin SO-DIMM
package.
■
■
■
■
■
■
■
■
■
■
■
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
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 finish 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.
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)
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.
■
■
■
■
■
Added PFP circuit built in to preserve card integrity
during accidental power loss
PFP circuit may not prevent file/data loss if power
failure occurs during a long write operation
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.
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
The DimmDrive WED7GxxxIDE36/33 module will have
the same functionality and capabilities of an intelligentATA
(IDE) disk drive. Once the device has been configured
by the user, it appears to the host as a standard ATA disk
drive.
■
■
■
■
■
■
Embedded systems
Internet Access Devices
Set Top Boxes
WEB Browser
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
Routers, Networking
WEB phones, car PC, DVD, HPC
■· Point-of-sale
■
■
Medical and Telcom
Other applications requiring embedded or solid
state storage
* Patent pending
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July, 2003
Rev. 0
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com