- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄231009 > S71PL032J80BAW074 (SPANSION LLC) SPECIALTY MEMORY CIRCUIT, PBGA56 PDF資料下載
參數(shù)資料
| 型號： | S71PL032J80BAW074 |
| 廠商： | SPANSION LLC |
| 元件分類： | 存儲器 |
| 英文描述： | SPECIALTY MEMORY CIRCUIT, PBGA56 |
| 封裝： | 7 X 9 MM, 1.20 MM HEIGHT, FBGA-56 |
| 文件頁數(shù)： | 138/188頁 |
| 文件大?。?/td> | 5078K |
| 代理商： | S71PL032J80BAW074 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁當(dāng)前第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁
52
S29PL127J/S29PL064J/S29PL032J for MCP
S29PL127_064_032J_00_A1 May 21, 2004
Prelimin ary
When the device is first powered on, or comes out of a reset cycle, the PPB Lock
bit set to the locked state, rather than cleared to the unlocked state.
The only means to clear the PPB Lock bit is by writing a unique 64-bit Password
to the device.
The Password Sector Protection method is otherwise identical to the Persistent
Sector Protection method.
A 64-bit password is the only additional tool utilized in this method.
Once the Password Mode Locking Bit is set, the password is permanently set with
no means to read, program, or erase it. The password is used to clear the PPB
Lock bit. The Password Unlock command must be written to the Flash, along with
a password. The Flash device internally compares the given password with the
pre-programmed password. If they match, the PPB Lock bit is cleared, and the
PPBs can be altered. If they do not match, the Flash device does nothing. There
is a built-in 2 s delay for each “password check.” This delay is intended to thwart
any efforts to run a program that tries all possible combinations in order to crack
the password.
Password and Password Mode Locking Bit
In order to select the Password sector protection scheme, the customer must first
program the password. The password may be correlated to the unique Electronic
Serial Number (ESN) of the particular Flash device. Each ESN is different for
every Flash device; therefore each password should be different for every Flash
device. While programming in the password region, the customer may perform
Password Verify operations.
Once the desired password is programmed in, the customer must then set the
Password Mode Locking Bit. This operation achieves two objectives:
Permanently sets the device to operate using the Password Protection Mode. It is
not possible to reverse this function.
Disables all further commands to the password region. All program, and read op-
erations are ignored.
Both of these objectives are important, and if not carefully considered, may lead
to unrecoverable errors. The user must be sure that the Password Protection
method is desired when setting the Password Mode Locking Bit. More importantly,
the user must be sure that the password is correct when the Password Mode
Locking Bit is set. Due to the fact that read operations are disabled, there is no
means to verify what the password is afterwards. If the password is lost after set-
ting the Password Mode Locking Bit, there will be no way to clear the PPB Lock bit.
The Password Mode Locking Bit, once set, prevents reading the 64-bit password
on the DQ bus and further password programming. The Password Mode Locking
Bit is not erasable. Once Password Mode Locking Bit is programmed, the Persis-
tent Sector Protection Locking Bit is disabled from programming, guaranteeing
that no changes to the protection scheme are allowed.
64-bit Password
The 64-bit Password is located in its own memory space and is accessible through
the use of the Password Program and Verify commands (see “Password Verify
Command”). The password function works in conjunction with the Password
Mode Locking Bit, which when set, prevents the Password Verify command from
reading the contents of the password on the pins of the device.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S71PL032JA0BAW074 | SPECIALTY MEMORY CIRCUIT, PBGA56 |
| S71PL032JA0BFW0F4 | SPECIALTY MEMORY CIRCUIT, PBGA56 |
| S29JL032H60TAI023 | 2M X 16 FLASH 3V PROM, 60 ns, PDSO48 |
| S29AL016D70BAI022 | 1M X 16 FLASH 3V PROM, 70 ns, PBGA48 |
| S29AL016D70TAN013 | 1M X 16 FLASH 3V PROM, 70 ns, PDSO48 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S71PL032J80BAW0Z0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Based MCPs |
| S71PL032J80BAW0Z2 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Based MCPs |
| S71PL032J80BAW0Z3 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Based MCPs |
| S71PL032J80BAW9Z0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Based MCPs |
| S71PL032J80BAW9Z2 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Based MCPs |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。