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參數(shù)資料
| 型號： | ML54051 |
| 廠商： | LAPIS SEMICONDUCTOR CO LTD |
| 元件分類： | 存儲控制器/管理單元 |
| 英文描述： | FLASH MEMORY DRIVE CONTROLLER, PQFP120 |
| 封裝： | 14 X 14 MM, 0.40 MM PITCH, PLASTIC, TQFP-120 |
| 文件頁數(shù)： | 5/37頁 |
| 文件大?。?/td> | 304K |
| 代理商： | ML54051 |
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Semiconductor
ML54051
9/33
5. SECTOR FORMATTER AND SEQUENCER
5.1 Data Formats
5.1.1
Data Format Within Sector
User data, ECC data and Header data are stored at the top of the sector first.
ECC data contains the ECC information for user data and ECC data. Since the same flag data is
stored in all pages (sectors) within the same block, the validity of flag data of the specified page
can be verified by comparing it to the flag data of another page. For this reason, ECC information
is not provided for the header data.
512 bytes
User Data
8 bits
Flag
17 bits
Address
23 bits
Count
10 bytes
ECC Data
6 bytes
Header Data
5 bits
Column No.
12 bits
Substitute Destination Address
Flag … page (sector) status
FFh: Good (normal data storage)
F0h: Bad (uncorrectable error, before substitution)
0Fh: Change (substitution completed)
Other than above: Null (abnormal)
Address … block address (supports up to 4096 blocks: 512 Mbits)
Column No. : supports up to column number 31 (00h to 1Fh)
Substitute destination address: block address within spare area
Supports up to 4096 blocks (512 Mbits)
Value to be stored in substitute destination address, substitute source address
Normal data = block address
Substitute destination sector = substitute source address
Substitute source sector = substitute destination address
Count… number of writes (supports up to 8,388,607 writes)
A substitute process is performed to a block that reaches the number of writes
previously set.
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