Advantech SQF-SDM 630 handleiding
Handleiding
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SQFlash
SATA DOM 630 Horizontal
Specifications subject to change without notice, contact your sales representatives for the most update information.
REV 1.0 Page 8 of 25 Apr. 1, 2016
4. General Description
Advanced NAND Flash Controller
Advantech SQFlash SATA DOM includes Bad Block Management Algorithm, Wear Leveling Algorithm and
Error Detection / Correction Code (EDC/ECC) Algorithm.
Bad Block Management
Bad blocks are blocks that contain one or more invalid bits of which the reliability is not guaranteed. Bad
blocks may be representing when flash is shipped and may developed during life time of the device.
Advantech SQFlash SATA DOM implement an efficient bad block management algorithm to detect the factory
produced bad blocks and manages any bad blocks that may develop over the life time of the device. This
process is completely transparent to the user, user will not aware of the existence of the bad blocks during
operation.
Wear Leveling
NAND Type flash have individually erasable blocks, each of which can be put through a finite number of
erase cycles before becoming unreliable. It means after certain cycles for any given block, errors can be
occurred in a much higher rate compared with typical situation. Unfortunately, in the most of cases, the flash
media will not been used evenly. For certain area, like file system, the data gets updated much frequently
than other area. Flash media will rapidly wear out in place without any rotation.
Wear leveling attempts to work around these limitations by arranging data so that erasures and re-writes are
distributed evenly across the full medium. In this way, no single sector prematurely fails due to a high
concentration of program/erase cycles.
Advantech SQFlash SATA DOM provides advanced wear leveling algorithm, which can efficiently spread out
the flash usage through the whole flash media area. By implement both dynamic and static wear leveling
algorithms, the life expectancy of the flash media can be improved significantly.
Error Detection / Correction
Advantech SQFlash SATA DOM utilizes BCH ECC Algorithm which offers one of the most powerful ECC
algorithms in the industry. This algorithm can support 44 bit ECC correct per 1K Byte data.
Sophisticate Product Management Systems
Since industrial application require much more reliable devices compare with consumer product, a more
sophisticated product management system become necessary for industrial customer requirement. The key
to providing reliable devices is product traceability and failure analysis system. By implement such systems
end customer can expect much more reliable product.
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Productinformatie
| Merk | Advantech |
| Model | SQF-SDM 630 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 4040 MB |
Caratteristiche Prodotto
| Breedte | 11.2 mm |
| Diepte | 4.2 mm |
| Hoogte | 44.7 mm |
| Interface | SATA III |
| Veiligheidsfunties | Shock resistant, Vibration proof |
