k9f1208u0b-h Samsung Semiconductor, Inc., k9f1208u0b-h Datasheet - Page 18
k9f1208u0b-h
Manufacturer Part Number
k9f1208u0b-h
Description
64m X 8 Bit Nand Flash Memory
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K9F1208U0B-H.pdf
(45 pages)
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K9F1208Q0B
K9F1208D0B
K9F1208U0B
NAND Flash Technical Notes
* Step1
When an error happens in the nth page of the Block ’A’ during erase or program operation.
* Step2
Copy the nth page data of the Block ’A’ in the buffer memory to the nth page of another free block. (Block ’B’ )
* Step3
Then, copy the data in the 1st ~ (n-1)th page to the same location of the Block ’B’ .
* Step4
Do not further erase Block ’A’ by creating an ’invalid Block’ table or other appropriate scheme.
Erase Flow Chart
*
Block Replacement
Erase Error
: If erase operation results in an error, map out
the failing block and replace it with another block.
*
1st
(n-1)th
nth
(page)
1st
(n-1)th
nth
(page)
No
an error occurs.
Read Status Register
Write Block Address
Block A
Block B
Erase Completed
or R/B = 1 ?
I/O 0 = 0 ?
I/O 6 = 1 ?
Write D0h
Write 60h
Start
Yes
Yes
(Continued)
2
Buffer memory of the controller.
1
No
18
Reclaim the Error
Read Flow Chart
No
Page Read Completed
FLASH MEMORY
ECC Generation
Write Address
Verify ECC
Read Data
Write 00h
Start
Yes
Advance
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