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參數(shù)資料
| 型號： | 29F0408RPFS |
| 廠商： | MAXWELL TECHNOLOGIES |
| 元件分類： | PROM |
| 英文描述： | 32 Megabit (4M x 8-Bit) Flash Memory |
| 中文描述： | 4M X 8 FLASH 5V PROM, 35 ns, DFP44 |
| 封裝： | DFP-44 |
| 文件頁數(shù)： | 28/33頁 |
| 文件大?。?/td> | 941K |
| 代理商： | 29F0408RPFS |
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Alldatasheetsaresubjecttochangewithoutnotice
2002MaxwellTechnologies
Allrightsreserved.
32Megabit(4Mx8-Bit)FlashMemory
29F0408
11.08.02Rev2
RESET
Thedeviceoffers aresetfeature, executedbywriting FFhtothecommandregister. Whenthedeviceis in
Busystateduringrandomread, programorerasemodes,theresetoperationwillaborttheseoperation.The
contents of memory cells being altered are no longer valid, as the data will be partially programmed or
erased. Internal address registers are clearedto"0"s anddata registers to"1"s. The commandregisteris
clearedtowaitforthe nextcommand, andthe Status Registeris clearedtovalue C0hwhenWP is high.
Refertotable 15fordevice status afterresetoperation. Ifthe device is already inresetstate a newreset
commandwillnotbeacceptedtobythecommandregister. TheR/Bpintransitions tolowfort
RST
afterthe
Resetcommandiswritten.Resetcommandisnotnecessaryfornormaloperation.RefertoFigure29below
F
IGURE
29.RESET O
PERATION
T
ABLE
15.D
EVICE
S
TATUS
DATAPROTECTION
Thedeviceis designedtoofferprotectionfromanyinvoluntaryprogram/eraseduringpower-transitions. An
internalvoltagedetectordisables allfunctions wheneverV
CC
is belowabout2V. WP pinprovides hardware
protectionandis recommendedtobekeptatV
IL
duringpower-upandpower-downas showninFigure30.
Thetwostepcommandsequenceforprogram/eraseprovidesadditionalsoftwareprotection.
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