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Datasheet
3
Contents
Contents
1.0
Introduction
....................................................................................................................................7
1.1
DocumentConventions ........................................................................................................7
1.2
ProductOverview .................................................................................................................7
1.3
PackageBallout....................................................................................................................8
1.4
SignalDefinitions..................................................................................................................9
2.0
PrinciplesofOperation
...............................................................................................................11
2.1
BusOperation.....................................................................................................................11
2.1.1
Read ......................................................................................................................11
2.1.2
OutputDisable.......................................................................................................12
2.1.3
Standby..................................................................................................................12
2.1.4
FlashReset............................................................................................................13
2.1.5
Write ......................................................................................................................13
3.0
FlashMemoryModesofOperation
............................................................................................13
3.1
ReadArray(FFh)................................................................................................................13
3.2
ReadIdentifier(90h)...........................................................................................................13
3.3
ReadStatusRegister(70h) ................................................................................................14
3.3.1
ClearStatusRegister(50h) ...................................................................................14
3.4
CFIQuery(98h)..................................................................................................................15
3.5
WordProgram(40h/10h)....................................................................................................15
3.5.1
SuspendingandResumingProgram(B0h/D0h)....................................................15
3.6
BlockErase(20h) ...............................................................................................................16
3.6.1
SuspendingandResumingErase(B0h/D0h)........................................................16
3.7
BlockLocking......................................................................................................................18
3.7.1
BlockLockingOperationSummary........................................................................19
3.7.2
LockedState..........................................................................................................19
3.7.3
UnlockedState ......................................................................................................19
3.7.4
Lock-DownState ...................................................................................................19
3.7.5
ReadingaBlock’sLockStatus ..............................................................................20
3.7.6
LockingOperationduringEraseSuspend.............................................................20
3.7.7
StatusRegisterErrorChecking .............................................................................20
3.8
128BitProtectionRegister.................................................................................................21
3.8.1
ReadingtheProtectionRegister............................................................................21
3.8.2
ProgrammingtheProtectionRegister(C0h)..........................................................21
3.8.3
LockingtheProtectionRegister.............................................................................22
4.0
PowerandResetConsiderations
..............................................................................................23
4.1
Power-Up/DownCharacteristics.........................................................................................23
4.2
AdditionalFlashFeatures...................................................................................................23
4.2.1
Improved12 VoltProductionProgramming...........................................................23
4.2.2
F-VPP<VPPLKforCompleteProtection..............................................................23
5.0
ElectricalSpecifications
.............................................................................................................24
5.1
AbsoluteMaximumRatings................................................................................................24
5.2
OperatingConditions..........................................................................................................25
5.3
Capacitance........................................................................................................................25