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參數(shù)資料
| 型號(hào)： | 28F640W30 |
| 廠商： | Intel Corp. |
| 元件分類： | DRAM |
| 英文描述： | 1.8 Volt Intel Wireless Flash Memory with 3 Volt I/O and SRAM (W30) |
| 中文描述： | 1.8伏英特爾無(wú)線閃存的3伏的I / O和SRAM（寬30） |
| 文件頁(yè)數(shù)： | 39/82頁(yè) |
| 文件大?。?/td> | 749K |
| 代理商： | 28F640W30 |
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28F6408W30, 28F3204W30, 28F320W30, 28F640W30
Preliminary
33
Addressing” on page 33
show allowable addresses. See also
Figure 36, “Protection Register
Programming Flowchart” on page 67
. Issuing a Protection Program command outside the register’s
address space results in a status register error (SR.4 = 1).
NOTE:
Addresses A
17
–A
8
should be set to zero. A
MAX
–A
18
= partition base address (PBA).
9.3
Protection Register Lock
The protection register’s user-programmable segment is lockable by programming “0” to the
PR-LOCK register bits “1” using the Protection Program command (
Figure 11
). PR-LOCK register
bit “0” is programmed to 0 at the Intel factory to protect the unique device number. PR-LOCK
register bit “1” can be programmed by the user to lock the 64-bit user register. This bit is set using
the Protection Program command to program “FFFDh” into PR-LOCK register 0.
After PR-LOCK register bits have been programmed, no further changes can be made to the
protection register’s stored values. Protection Program commands written to a locked section result
in a status register error (program error bit SR.4 and lock error bit SR.1 are set to 1). Once locked,
protection register states are not reversible.
Table 16. Protection Register Addressing
Word
Use
ID Offset
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
Word
LOCK
Both
PBA+000080h
1
0
0
0
0
0
0
0
LOCK
0
Intel
PBA+000081h
1
0
0
0
0
0
0
1
0
1
Intel
PBA+000082h
1
0
0
0
0
0
1
0
1
2
Intel
PBA+000083h
1
0
0
0
0
0
1
1
2
3
Intel
PBA+000084h
1
0
0
0
0
1
0
0
3
4
Customer
PBA+000085h
1
0
0
0
0
1
0
1
4
5
Customer
PBA+000086h
1
0
0
0
0
1
1
0
5
6
Customer
PBA+000087h
1
0
0
0
0
1
1
1
6
7
Customer
PBA+000088h
1
0
0
0
1
0
0
0
7
Figure 11. Protection Register Locking
Lock Register 0
4 Words (64 bits)
User Programmed
1 Word (16bits)
4 Words (64 bits)
Intel Factory Programmed
0084h
0088h
0085h
0081h
0080h
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