參數(shù)資料
型號： S29PL032J
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)： 59/106頁
文件大?。?/td> 1997K
代理商： S29PL032J
April 7, 200531107A62
S29PL127J/S29PL129J/S29PL064J/S29PL032J
57
P R E L I M I N A R Y
Temporary Sector Unprotect
This feature allows temporary unprotection of previously protected sectors to
change data in-system. The Sector Unprotect mode is activated by setting the
RESET# pin to
V
ID
. During this mode, formerly protected sectors can be pro-
grammed or erased by selecting the sector addresses. Once V
ID
is removed from
the RESET# pin, all the previously protected sectors are protected again. 2 shows
the algorithm, and 21 shows the timing diagrams, for this feature. While PPB lock
is set, the device cannot enter the Temporary Sector Unprotection Mode.
SecSi (Secured Silicon) Sector Flash Memory Region
The SecSi (Secured Silicon) Sector feature provides a Flash memory region that
enables permanent part identification through an Electronic Serial Number (ESN)
The 128-word SecSi sector is divided into 64 factory-lockable words that can be
programmed and locked by the customer. The SecSi sector is located at ad-
dresses 000000h-00007Fh in both Persistent Protection mode and Password
Protection mode. Indicator bits DQ6 and DQ7 are used to indicate the fac-
tory-locked and customer locked status of the part.
The system accesses the SecSi Sector through a command sequence (see the
"
Enter SecSi Sector/Exit SecSi Sector Command Sequence
" section). After the
system has written the Enter SecSi Sector command sequence, it may read the
SecSi Sector by using the addresses normally occupied by the boot sectors. This
mode of operation continues until the system issues the Exit SecSi Sector com-
mand sequence, or until power is removed from the device. On power-up, or
following a hardware reset, the device reverts to sending commands to the nor-
mal address space.
Note that the ACC function and unlock bypass modes are not
available when the SecSi Sector is enabled.
Factory-Locked Area (64 words)
The factory-locked area of the SecSi Sector (000000h-00003Fh) is locked when
the part is shipped, whether or not the area was programmed at the factory. The
Notes:
1. All protected sectors unprotected (If WP#/ACC = V
IL
, upper two and lower two
sectors will remain protected).
2. All previously protected sectors are protected once again
Figure 2.
Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
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PDF描述
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相關代理商/技術(shù)參數(shù)
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S29PL032J70BAI120 功能描述:閃存 32Mb 3V 70ns Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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