參數(shù)資料
型號: AT45DB011D_07
廠商: Atmel Corp.
英文描述: 1-megabit 2.7-volt DataFlash
中文描述: 1兆位2.7伏的DataFlash
文件頁數(shù): 14/52頁
文件大?。?/td> 1107K
代理商: AT45DB011D_07
14
3639B–DFLASH–02/07
AT45DB011D [Preliminary]
9.1
Sector Protection Register
The nonvolatile Sector Protection Register specifies which sectors are to be protected or unpro-
tected with either the software or hardware controlled protection methods. The Sector Protection
Register contains 4 bytes of data, of which byte locations 0 through 3 contain values that specify
whether sectors 0 through 3 will be protected or unprotected. The Sector Protection Register is
user modifiable and must first be erased before it can be reprogrammed.
Table 9-3
illustrates the
format of the Sector Protection Register.
Note:
1. The default value for bytes 0 through 3 when shipped from Atmel
is 00H.
x = don’t care.
Table 9-2.
Sector Protection Register
Sector Number
0 (0a, 0b)
1 to 3
Protected
See
Table 9-3
FFH
Unprotected
00H
Table 9-3.
Sector 0 (0a, 0b)
0a
0b
Bit 3, 2
Data
Value
(Page 0-7)
(Page 8-127)
Bit 7, 6
Bit 5, 4
Bit 1, 0
Sectors 0a, 0b Unprotected
00
00
xx
xx
0xH
Protect Sector 0a
11
00
xx
xx
CxH
Protect Sector 0b (Page 8-127)
00
11
xx
xx
3xH
Protect Sectors 0a (Page 0-7), 0b
(Page 8-127)
(1)
11
11
xx
xx
FxH
相關(guān)PDF資料
PDF描述
AT45DB011D-MU 1-megabit 2.7-volt DataFlash
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AT45DB011D-SU 1-megabit 2.7-volt DataFlash
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