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The Application and Research on Large-Page NAND Flash in Embedded System

Author: DingDeHong
Tutor: QinGuiHe
School: Jilin University
Course: Software Engineering
Keywords: Large page FMD ECC check
CLC: TP333-2
Type: Master's thesis
Year: 2008
Downloads: 224
Quote: 2
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Abstract


Regular use in the field of consumer electronics , NAND Flash memory , in particular ARM Embedded System is indispensable and Flash usually divided into the NOR FlaLsh and NAND Flash ARM now supports NAND Flash start because of cost considerations ; currently ARM development board , especially in the PMP class , and GPS terminal equipment used Flash mostly 64MB, affected by the MP3 player , large page (2k/page) Flash large shipments inversely proportional to the small price of the same capacity page NAND ; OEM factories and foreign trade companies are very sensitive BOM cost , cost Down tightly set live NAND Flash , due to the initial program are 64MB large page NAND Flash overall solution in the GPS industry has still not announced , so the achievement this article . Large page NAND Flash 's advantage is that the read speed is significantly faster than the small page to about 2 times faster , so win valuable start-up time to live need about 20s <10s, fast to the end user experience feeling. Redundant NAND Flash made ??FAT USB flash drives can store large size files , such as help manuals , operation manuals, instructions , etc. , can also be loaded in the GPS map the dispensation SD card , SD card to save costs and improve integration reliability. NAND Flash storage structure and physical properties , has two ways to try to extended NANDFlash capacity , the beginning is completely the storage structure 2k/page large page operation , later to keep the interface functions the same premise as page multiple small pages to operate , and found that the latter is more likely to achieve better stability . The paper first Jtag programmer proceed gradually start bootloader , FMD drive , stability before and after two years of testing and validation experience was able to eventually towards industrial applications , and significantly improve product cost . Development Environment : S3C2440A WINCE5.0 Evc4.0 VC6.0 ADS1.2.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory
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