參數(shù)資料
型號： S29PL129N70GAIW03
廠商： Spansion Inc.
英文描述： 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
中文描述： 256/128/128字節(jié)（16/8/8 M中的x 16位），3.0伏的CMOS只同步讀/寫，頁模式閃存
文件頁數(shù)： 51/85頁
文件大?。?/td> 940K
代理商： S29PL129N70GAIW03
November 23, 2005 S29PL-N_00_A4
S29PL-N MirrorBit Flash Family
49
P r e l i m i n a r y
8.1
Lock Register
As shipped from the factory, all devices default to the persistent mode when power is applied, and
all sectors are unprotected, unless otherwise chosen through the DYB ordering option (see
Or-
dering Information
). The device programmer or host system must then choose which sector
protection method to use. Programming (setting to
0
) any one of the following two one-time pro-
grammable, non-volatile bits locks the part permanently in that mode:
Lock Register Persistent Protection Mode Lock Bit (DQ1)
Lock Register Password Protection Mode Lock Bit (DQ2)
For programming lock register bits see
Table 12.2
.
Notes
1.
If the password mode is chosen, the password must be programmed before setting the cor-
responding lock register bit.
After the Lock Register Bits Command Set Entry command sequence is written, reads and
writes for Bank A are disabled, while reads from other banks are allowed until exiting this
mode.
If both lock bits are selected to be programmed (to zeros) at the same time, the operation
aborts.
Once the Password Mode Lock Bit is programmed, the Persistent Mode Lock Bit is perma-
nently disabled, and no changes to the protection scheme are allowed. Similarly, if the
Persistent Mode Lock Bit is programmed, the Password Mode is permanently disabled.
2.
3.
4.
After selecting a sector protection method, each sector can operate in any of the following three
states:
1.
Constantly locked.
The selected sectors are protected and cannot be reprogrammed unless
PPB lock bit is cleared via a password, hardware reset, or power cycle.
Dynamically locked.
The selected sectors are protected and can be altered via software
commands.
Unlocked.
The sectors are unprotected and can be erased and/or programmed.
2.
3.
These states are controlled by the bit types described in Sections
8.2
–
8.6
.
8.2
Persistent Protection Bits
The Persistent Protection Bits are unique and nonvolatile for each sector and have the same en-
durances as the Flash memory. Preprogramming and verification prior to erasure are handled by
the device, and therefore do not require system monitoring.
Table 8.1 Lock Register
Device
DQ15 – 05
DQ4
DQ3
DQ2
DQ1
DQ0
S29PL256N
Undefined
DYB Lock Boot Bit
0 = sectors
power up
protected
1 = sectors
power up
unprotected
PPB One-Time
Programmable Bit
0 = All PPB erase
command disabled
1 = All PPB Erase
command enabled
Password
Protection
Mode Lock Bit
Persistent
Protection
Mode Lock Bit
Secured
Silicon Sector
Protection Bit
相關PDF資料
PDF描述
S29PL129N80FAW000 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N80FAW002 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N80FAW003 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N80FAWW00 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N80FAWW02 256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
相關代理商/技術參數(shù)
參數(shù)描述
S29PL129N70GAW000 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N70GAW002 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N70GAW003 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N70GAWW00 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
S29PL129N70GAWW02 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/128 Mb (16/8/8 M x 16-Bit) CMOS, 3.0 Volt-only Simultaneous Read/Write, Page-Mode Flash Memory
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