参数资料
型号: S71PL254JC0BAITU3
厂商: SPANSION LLC
元件分类: 存储器
英文描述: SPECIALTY MEMORY CIRCUIT, PBGA84
封装: 8 X 11.60 MM, 1.40 MM HEIGHT, FBGA-84
文件页数: 139/188页
文件大小: 5078K
代理商: S71PL254JC0BAITU3
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页当前第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页
May 21, 2004 S29PL127_064_032J_00_A1
S29PL127J/S29PL064J/S29PL032J for MCP
53
Prelimin ary
Write Protect (WP#)
The Write Protect feature provides a hardware method of protecting the upper
two and lower two sectors(PL127J: 0, 1, 268, and 269, PL064J: 0, 1, 140, and
141, PL032J: 0, 1, 76, and 77, PL129J: SA1-133, SA1-134,SA2-0 and SA2-1)
without using VID. This function is provided by the WP# pin and overrides the pre-
viously discussed High Voltage Sector Protection method.
If the system asserts VIL 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 VIH 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 unpro-
tected. That is, sector protection or unprotection for these sectors depends on
whether they were last protected or unprotected using the method described in
Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent
behavior of the device may result.
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. Assert-
ing 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 clear-
ing the PPB Lock Bit is by issuing a hardware or power-up reset. The Password
Unlock command is ignored in Persistent Protection Mode.
High Voltage Sector Protection
Sector protection and unprotection may also be implemented using programming
equipment. The procedure requires high voltage (VID) to be placed on the RE-
SET# pin. Refer to Figure 1 for details on this procedure. Note that for sector
unprotect, all unprotected sectors must first be protected prior to the first sector
write cycle.
相关PDF资料
PDF描述
S71PL032JF0BFW074 SPECIALTY MEMORY CIRCUIT, PBGA56
S29AL016D90MFN011 1M X 16 FLASH 3V PROM, 90 ns, PDSO44
SM-5MIN-A-TL-26 RF COAXIAL RELAY, SP5T, FAILSAFE, 2875mW (COIL), 26500MHz, PANEL MOUNT
SM-5MIN-A-TL RF COAXIAL RELAY, SP5T, FAILSAFE, 2875mW (COIL), 18000MHz, PANEL MOUNT
SM-5MIN-A RF COAXIAL RELAY, SP5T, FAILSAFE, 2875mW (COIL), 18000MHz, PANEL MOUNT
相关代理商/技术参数
参数描述
S71PL254JC0BAW0Z0 制造商:SPANSION 制造商全称:SPANSION 功能描述:Based MCPs
S71PL254JC0BAW0Z2 制造商:SPANSION 制造商全称:SPANSION 功能描述:Based MCPs
S71PL254JC0BAW0Z3 制造商:SPANSION 制造商全称:SPANSION 功能描述:Based MCPs
S71PL254JC0BAW9Z0 制造商:SPANSION 制造商全称:SPANSION 功能描述:Based MCPs
S71PL254JC0BAW9Z2 制造商:SPANSION 制造商全称:SPANSION 功能描述:Based MCPs