S29PL-N_07 SPANSION [SPANSION], S29PL-N_07 Datasheet - Page 44

• Manufacturer Part Number: S29PL-N_07
• Description: 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
• Manufacturer: SPANSION [SPANSION]

8.
44
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
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.
5. 0 = Sector Protected,
Notes:
1 = Sector Unprotected.
Memory Array
Sector N
Hardware Methods
Sector N-2
Sector N-1
Sector 0
Sector 1
Sector 2
(Note 4)
Figure 8.1 Advanced Sector Protection/Unprotection
S29PL-N MirrorBit
sectors locked)
WP# = V
D a t a
(All boot
IL
0 = PPBs Locked
S h e e t
Protection Bit (PPD)
PPB Lock Bit
™
Flash Family
64-bit Password
Persistent
Password Method
(Notes 5,
(One Time Protect)
PPB N-2
PPB N-1
( P r e l i m i n a r y )
PPB 0
PPB 1
PPB 2
PPB N
Software Methods
6. PPBs programmed individually, but cleared collectively.
7. 0 = Sector Protected,
8. Protect effective only if PPB Lock Bit is unlocked and
9. Volatile Bits: defaults to user choice upon power-up
(DQ2)
Figure 8.1 on page
(Notes 1, 2,
corresponding PPB is 1 (unprotected).
(see ordering options).
1 = PPBs Unlocked
(One Time Programmable)
6)
1 = Sector Unprotected.
Lock Register
3)
Persistent Method
Protection Bit (DYB)
44.
(DQ1)
S29PL-N_00_A5 June 6, 2007
(Notes 7, 8, 9)
Dynamic
DYB N-2
DYB N-1
DYB N
DYB 0
DYB 1
DYB 2