NAND16GW3F2AN6E NUMONYX, NAND16GW3F2AN6E Datasheet - Page 46

• Manufacturer Part Number: NAND16GW3F2AN6E
• Description: IC FLASH 16GBIT SLC 48TSOP
• Manufacturer: NUMONYX

Specifications of NAND16GW3F2AN6E

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 16G (2G x 8)
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Speed: -

Software algorithms
9.3
46/65
Figure 31. Bad block management flowchart
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
Figure 32. Garbage collection
32).
Invalid
Valid
page
page
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
NAND08GW3F2A, NAND16GW3F2A
New area (after GC)
AI07588C
AI07599B