參數(shù)資料
型號： S29PL129J
廠商： Spansion Inc.
英文描述： CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory with Enhanced VersatileIO Control
中文描述： 3.0伏的CMOS只，同步讀/寫閃存與增強VersatileIO控制記憶
文件頁數(shù)： 52/106頁
文件大?。?/td> 1997K
代理商： S29PL129J
50
S29PL127J/S29PL129J/S29PL064J/S29PL032J
31107A62 April 7, 2005
P R E L I M I N A R Y
Sector Protection
The PL127J, PL129J, PL064J, and PL032J features several levels of sector protec-
tion, which can disable both the program and erase operations in certain sectors
or sector groups:
Persistent Sector Protection
A command sector protection method that replaces the old 12 V controlled pro-
tection method.
Password Sector Protection
A highly sophisticated protection method that requires a password before
changes to certain sectors or sector groups are permitted
WP# Hardware Protection
A write protect pin that can prevent program or erase operations in sectors
SA1-133, SA1-134, SA2-0 and SA2-1.
The WP# Hardware Protection feature is always available, independent of the
software managed protection method chosen.
Selecting a Sector Protection Mode
All parts default to operate in the Persistent Sector Protection mode. The cus-
tomer must then choose if the Persistent or Password Protection method is most
desirable. There are two one-time programmable non-volatile bits that define
which sector protection method will be used. If the Persistent Sector Protection
method is desired, programming the Persistent Sector Protection Mode Locking
Bit permanently sets the device to the Persistent Sector Protection mode. If the
Password Sector Protection method is desired, programming the Password Mode
Locking Bit permanently sets the device to the Password Sector Protection mode.
It is not possible to switch between the two protection modes once a locking bit
has been set. One of the two modes must be selected when the device is first
programmed. This prevents a program or virus from later setting the Password
Mode Locking Bit, which would cause an unexpected shift from the default Per-
sistent Sector Protection Mode into the Password Protection Mode.
Table 16.
Sector Protection Schemes
DYB
PPB
PPB Lock
Sector State
0
0
0
Unprotected—PPB and DYB are changeable
0
0
1
Unprotected—PPB not changeable, DYB is changeable
0
1
0
Protected—PPB and DYB are changeable
1
0
0
1
1
0
0
1
1
Protected—PPB not changeable, DYB is changeable
1
0
1
1
1
1
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相關代理商/技術參數(shù)
參數(shù)描述
S29PL129N 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
S29PL129N65FAI000 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
S29PL129N65FAI002 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
S29PL129N65FAI003 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
S29PL129N65FAIW00 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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