參數資料
型號: K9E2G08U0M-YIB00
元件分類: PROM
英文描述: 256M X 8 FLASH 2.7V PROM, 30 ns, PDSO48
封裝: 12 X 20 MM, 0.50 MM PITCH, PLASTIC, TSOP1-48
文件頁數: 6/38頁
文件大?。?/td> 888K
代理商: K9E2G08U0M-YIB00
FLASH MEMORY
14
K9E2G08U0M
Preliminary
Erase Flow Chart
Start
I/O 6 = 1 ?
I/O 0 = 0 ?
No
*
Write 60h
Write Block Address
Write D0h
Read Status Register
or R/B = 1 ?
Erase Error
Yes
No
: If erase operation results in an error, map out
the failing block and replace it with another block.
*
Erase Completed
Yes
Read Flow Chart
Start
Verify ECC
No
Write 00h
Write Address
Read Data
ECC Generation
Reclaim the Error
Page Read Completed
Yes
NAND Flash Technical Notes (Continued)
Block Replacement
* 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.
Buffer memory of the controller.
1st
Block A
Block B
(n-1)th
nth
(page)
1
2
{
1st
(n-1)th
nth
(page)
{
an error occurs.
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