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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

WED7GxxxIDE36

WED7GxxxIDE33

July, 2003

Rev. 0

PRELIMINARY*

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

DimmDrive Solid State IDE Flash Module with Power Failure

Protection* IDE36

DimmDrive Solid State IDE Flash Module IDE33

FEATURES

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144 pin SO-DIMMpackage with IDE pinouts

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Plug-and-play solid state disk

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NAND Flash memory technology by SanDisk

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3.3 V and 5.0 V power supply operation

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16MB – 2GB memory density

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Low power consumption

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ECC error correction

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512 Byte Sector compatible to IDE HD Drives

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Supports true IDE mode

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Commercial temperature range 0°C - +70°C

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PFP Power Failure Protection Circuit (IDE36)

POWER BACKUP FEATURES (IDE36)

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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

■

PFP control circuit prevents false operations after

power loss

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Improves card integrity in applications with a high

risk of power failure

■

Minimum power backup time of 10ms

APPLICATIONS

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Embedded systems

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Internet Access Devices

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Set Top Boxes

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WEB Browser

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Routers, Networking

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WEB phones, car PC, DVD, HPC

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· Point-of-sale

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Medical and Telcom

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Other applications requiring embedded or solid

state storage

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.

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.

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 configured

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