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S29GL01GP датащи(PDF) 42 Page - SPANSION

номер детали S29GL01GP
подробное описание детали  1 Gigabit, 512 Megabit, 256 Megabit and 128 Megabit 3.0 Volt-only Page Mode Flash Memory featuring 90 nm MirrorBit Process Technology
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S29GL01GP датащи(HTML) 42 Page - SPANSION

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S29GL-P MirrorBit® Flash Family
S29GL-P_00_A14 October 22, 2012
Da ta
Sh e e t
8.
Advanced Sector Protection/Unprotection
The Advanced Sector Protection/Unprotection feature disables or enables programming or erase operations
in any or all sectors and can be implemented through software and/or hardware methods, which are
independent of each other. This section describes the various methods of protecting data stored in the
memory array. An overview of these methods in shown in Figure 8.1.
Figure 8.1 Advanced Sector Protection/Unprotection
Hardware Methods
Software Methods
WP#/ACC = VIL
(Highest or Lowest
Sector Locked)
Password Method
(DQ2)
Persistent Method
(DQ1)
Lock Register
(One Time Programmable)
PPB Lock Bit
1,2,3
64-bit Password
(One Time Protect)
1 = PPBs Unlocked
0 = PPBs Locked
Memory Array
Sector 0
Sector 1
Sector 2
Sector N-2
Sector N-1
Sector N
3
PPB 0
PPB 1
PPB 2
PPB N-2
PPB N-1
PPB N
Persistent
Protection Bit
(PPB)
4,5
DYB 0
DYB 1
DYB 2
DYB N-2
DYB N-1
DYB N
Dynamic
Protection Bit
(DYB)
6,7,8
7. 0 = Sector Protected,
1 = Sector Unprotected.
8. Protect effective only if PPB Lock Bit is
unlocked and corresponding PPB is “1”
(unprotected).
9. Volatile Bits: defaults to user choice upon
power-up (see ordering options).
5. 0 = Sector Protected,
1 = Sector Unprotected.
6. PPBs programmed individually,
but cleared collectively
1. Bit is volatile, and defaults to “1” on reset.
2. Programming to “0” locks all PPBs to their
current state.
3. Once programmed to “0”, requires hardware
reset to unlock.
4. N = Highest Address Sector.



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