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8th NAND Flash Controller

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8.1 NAND Flash Introduction and NAND Flash Controller use

NAND Flash has a similar position in embedded systems as a hard disk on a PC

NAND Flash can still be saved after power-down

8.1.1 Flash Introduction

There are nor flash and NAND flash two kinds

NOR Flash interface with SDRAM is exactly the same, random access to arbitrary address data

NOR Flash block size is 64kb~128kb,nand The block size is 8KB~64KB

NAND Flash typically reads and writes in 512-byte units

The reliability of flash storage is mainly considered 3 points: bit rollover, bad block and erasable number

Using EDC/ECC for error detection and recovery

Common JFFS2 file system on nor

Common Yaffs file system on NAND

8th NAND Flash Controller

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