NAND08GW3C2A NUMONYX [Numonyx B.V], NAND08GW3C2A Datasheet - Page 35
NAND08GW3C2A
Manufacturer Part Number
NAND08GW3C2A
Description
8/16 Gbit, 2112 byte page, 3 V supply, multilevel, multiplane, NAND Flash memory
Manufacturer
NUMONYX [Numonyx B.V]
Datasheet
1.NAND08GW3C2A.pdf
(58 pages)
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NAND08GW3C2A, NAND16GW3C2A
Figure 14. Bad block management flowchart
9.3
Figure 15. Garbage collection
Garbage collection
When a data page needs to be modified, it is faster to write to the first available page and
mark the previous page as invalid. After several updates it is necessary to remove invalid
pages to free some memory space.
To free this memory space and allow further program operations, it is recommended to
implement a garbage collection algorithm. In a garbage collection software the valid pages
are copied into a free area and the block containing the invalid pages is erased (see
Figure
Invalid
Valid
Page
Page
15).
Old Area
Block Address =
START
Block 0
= FFh?
block?
Data
Last
END
YES
YES
NO
NO
(Erased)
Free
Page
Bad Block table
Update
Block Address
Increment
New Area (After GC)
AI07588C
AI07599B
Software algorithms
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