參數(shù)資料
型號(hào)： S29PL-J60BAW011
廠商： Spansion Inc.
元件分類： DRAM
英文描述： CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
中文描述： CMOS 3V電壓供電，同步讀/寫Flash存儲(chǔ)器并有增強(qiáng)VersatileIO控制
文件頁(yè)數(shù)： 50/96頁(yè)
文件大?。?/td> 827K
代理商： S29PL-J60BAW011
48
S29PL-J
S29PL-J_00_A9 September 22, 2006
D a t a
S h e e t
( A d v a n c e
I n f o r m a t i o n )
13.3
Write Protect (WP#)
The Write Protect feature provides a hardware method of protecting the upper two and lower two sectors
without using V
ID
. This function is provided by the WP# pin and overrides the previously discussed
High
Voltage Sector Protection
on page 48
method.
If the system asserts V
IL
on the WP#/ACC pin, the device disables program and erase functions in the two
outermost 4 Kword sectors on both ends of the flash array independent of whether it was previously protected
or unprotected.
If the system asserts V
IH
on the WP#/ACC pin, the device reverts the upper two and lower two sectors to
whether they were last set to be protected or unprotected. That is, sector protection or unprotection for these
sectors depends on whether they were last protected or unprotected using the method described in the
High
Voltage Sector Protection
on page 48
.
Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the device may
result.
13.3.1
Persistent Protection Bit Lock
The Persistent Protection Bit (PPB) Lock is a volatile bit that reflects the state of the Password Mode Locking
Bit after power-up reset. If the Password Mode Lock Bit is also set after a hardware reset (RESET# asserted)
or a power-up reset, the ONLY means for clearing the PPB Lock Bit in Password Protection Mode is to issue
the Password Unlock command. Successful execution of the Password Unlock command clears the PPB
Lock Bit, allowing for sector PPBs modifications. Asserting RESET#, taking the device through a power-on
reset, or issuing the PPB Lock Bit Set command sets the PPB Lock Bit to a “1” when the Password Mode
Lock Bit is not set.
If the Password Mode Locking Bit is not set, including Persistent Protection Mode, the PPB Lock Bit is cleared
after power-up or hardware reset. The PPB Lock Bit is set by issuing the PPB Lock Bit Set command. Once
set the only means for clearing the PPB Lock Bit is by issuing a hardware or power-up reset. The Password
Unlock command is ignored in Persistent Protection Mode.
13.4
High Voltage Sector Protection
Sector protection and unprotection may also be implemented using programming equipment. The procedure
requires high voltage (V
ID
) to be placed on the RESET# pin. Refer to
Figure 13.1 on page 49
for details on
this procedure. Note that for sector unprotect, all unprotected sectors must first be protected prior to the first
sector write cycle.
相關(guān)PDF資料
PDF描述
S29PL-J60BAW012 CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW013 CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW020 CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW021 CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S29PL-J60BAW012 制造商:SPANSION 制造商全稱:SPANSION 功能描述:CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW013 制造商:SPANSION 制造商全稱:SPANSION 功能描述:CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW020 制造商:SPANSION 制造商全稱:SPANSION 功能描述:CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW021 制造商:SPANSION 制造商全稱:SPANSION 功能描述:CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
S29PL-J60BAW022 制造商:SPANSION 制造商全稱:SPANSION 功能描述:CMOS 3.0 Volt-only, Simultaneous-Read/Write Flash Memory with Enhanced VersatileIO Control
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