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參數(shù)資料
| 型號： | K9WAG08U1M |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 1G x 8 Bit / 2G x 8 Bit NAND Flash Memory |
| 中文描述： | 1克× 8位/第二代× 8位NAND閃存 |
| 文件頁數(shù)： | 15/49頁 |
| 文件大小： | 1215K |
| 代理商： | K9WAG08U1M |
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FLASH MEMORY
15
Preliminary
K9
WA
G08U1M
K9K8G08U0M
NAND Flash Technical Notes
Identifying Initial Invalid Block(s)
All device locations are erased(FFh) except locations where the initial invalid block(s) information is written prior to shipping. The ini-
tial invalid block(s) status is defined by the 1st byte in the spare area. Samsung makes sure that either the 1st or 2nd page of every
initial invalid block has non-FFh data at the column address of 2048. Since the initial invalid block information is also erasable in
most cases, it is impossible to recover the information once it has been erased. Therefore, the system must be able to recognize the
initial invalid block(s) based on the original initial invalid block information and create the initial invalid block table via the following
suggested flow chart(Figure 3). Any intentional erasure of the original initial invalid block information is prohibited.
Initial Invalid Block(s)
Initial invalid blocks are defined as blocks that contain one or more initial invalid bits whose reliability is not guaranteed by Samsung.
The information regarding the initial invalid block(s) is called the initial invalid block information. Devices with initial invalid block(s)
have the same quality level as devices with all valid blocks and have the same AC and DC characteristics. An initial invalid block(s)
does not affect the performance of valid block(s) because it is isolated from the bit line and the common source line by a select tran-
sistor. The system design must be able to mask out the initial invalid block(s) via address mapping. The 1st block, which is placed on
00h block address, is guaranteed to be a valid block up to 1K program/erase cycles with 1bit
/512Byte
ECC.
*
Check "FFh" at the column address 2048
of the 1st and 2nd page in the block
Figure 3. Flow chart to create initial invalid block table.
Start
Set Block Address = 0
Check "FFh"
Increment Block Address
Last Block
End
No
Yes
Yes
Create (or update)
Initial
Invalid Block(s) Table
No
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| K9S2808V0B | TV 29C 29#16 PIN RECP |
| K9S6408V0B | SmartMedia CARD |
| K9S6408V0C | SmartMedia CARD |
| K9S3208V0A | 4M x 8 bit SmartMedia Card |
| K9S3208V0A-SSB0 | 4M x 8 bit SmartMedia Card |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| K9WBG08U1M-PCB0000 | 制造商:Samsung SDI 功能描述:PN may be NE NA |
| K9WBG08U1M-PCB0T00 | 制造商:Samsung 功能描述:SLC 8GB 32GB QDP X8 3.3 TSOP1 - Tape and Reel |
| K9WBG08U1M-PCK0000 | 制造商:Samsung SDI 功能描述: |
| K9WBG08U1M-PCK0T00 | 制造商:Samsung 功能描述:SLC 8GB 32GB QDP X8 3.3 TSOP1 TR - Tape and Reel |
| K9WBG08U1M-PIB0000 | 制造商:Samsung SDI 功能描述: |
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