參數(shù)資料
型號： RD28F1604C3T90
廠商： INTEL CORP
元件分類： 存儲器
英文描述： 3 VOLT INTEL Advanced+BootBlock FlashMemory(C3)Stacked-ChipScalPackageFamilye
中文描述： SPECIALTY MEMORY CIRCUIT, PBGA66
封裝： 8 X 10 MM, 1.20 MM HEIGHT, SCSP-66
文件頁數(shù)： 42/70頁
文件大?。?/td> 1223K
代理商： RD28F1604C3T90
3VoltIntel
Advanced+BootBlockFlashMemoryStacked-CSPFamily
42
Datasheet
7.2.1
F-RP#ConnectedtoSystemReset
TheuseofF-RP#duringsystemresetisimportantwithautomatedprogram/erasedevicessincethe
systemexpectstoreadfromtheflashmemorywhenitcomesoutofreset.IfaCPUresetoccurs
withoutaflashmemoryreset,properCPUinitializationwillnotoccurbecausetheflashmemory
maybeprovidingstatusinformationinsteadofarraydata.IntelrecommendsconnectingF-RP#to
thesystemCPURESET#signaltoallowproperCPU/flashinitializationfollowingsystemreset.
SystemdesignersmustguardagainstspuriouswriteswhenF-V
CC
voltagesareaboveV
LKO
.Since
bothF-WE#andF-CE#mustbelowforacommandwrite,drivingeithersignaltoV
IH
will
inhibit
writestothedevice.TheCUIarchitectureprovidesadditionalprotectionsincealterationof
memorycontentscanonlyoccuraftersuccessfulcompletionofthetwo-stepcommandsequences.
ThedeviceisalsodisableduntilF-RP#isbroughttoV
IH
,regardlessofthestateofitscontrol
inputs.
Byholdingthedeviceinreset(F-RP#connectedtosystemPowerGood)duringpower-up/down,
invalidbusconditionsduringpower-upcanbemasked,providingyetanotherlevelofmemory
protection.
7.2.2
F-V
CC
,F-V
PP
andF-RP#Transition
TheCUIlatchescommandsasissuedby
systemsoftwareandisnotalteredbyF-V
PP
orF-CE#
transitionsorWSMactions.Itsdefaultstateuponpower-up,afterexitfromresetmodeorafter
F-V
CC
transitionsaboveV
LKO
(Lockoutvoltage),isreadarraymode.
Afteranyprogramorblockeraseoperationiscomplete(evenafterF-V
PP
transitionsdownto
V
PPLK
),theCUImustberesettoreadarraymodeviatheReadArraycommandifaccesstothe
flashmemoryarrayisdesired.
NOTE:
1.AresistorcanbeusediftheF-V
CC
supplycansinkadequatecurrentbasedonresistorvalue.
Figure12.ExamplePowerSupplyConfigurations
V
CC
V
PP
12VFastProgramming
AbsoluteWriteProtectionWithV
PP
≤
V
PPLK
SystemSupply
12VSupply
10
≤
K
V
CC
V
PP
SystemSupply
12VSupply
LowVoltageand12VFastProgramming
V
CC
V
PP
SystemSupply
Prot#
(LogicSignal)
V
CC
V
PP
SystemSupply
Low-VoltageProgramming
Low-VoltageProgramming
AbsoluteWriteProtectionviaLogicSignal
(Note1)
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