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HT45F56 Datasheet(PDF) 25 Page - Holtek Semiconductor Inc

Part # HT45F56
Description  Shock Detector Flash MCU
PDF  90 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F56 Datasheet(HTML) 25 Page - Holtek Semiconductor Inc

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Rev. 1.11
24
April 11, 2017
Rev. 1.11
25
April 11, 2017
HT45F56
Shock Detector Flash MCU
HT45F56
Shock Detector Flash MCU
EED Register
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit7~0
D7~D0:DataEEPROMdatabit7~bit0
EEC Register
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
WREN
WR
RDEN
RD
R/W
—
—
—
—
R/W
R/W
R/W
R/W
POR
—
—
—
—
0
0
0
0
Bit7~4
Unimplemented,readas0.
Bit3
WREN:DataEEPROMwriteenable
0:Disable
1:Enable
ThisistheDataEEPROMWriteEnableBitwhichmustbesethighbeforeData
EEPROMwriteoperationsarecarriedout.ClearingthisbittozerowillinhibitData
EEPROMwriteoperations.
Bit2
WR:EEPROMwritecontrol
0:Writecyclehasfinished
1:Activateawritecycle
ThisistheDataEEPROMWriteControlBitandwhensethighbytheapplication
programwillactivateawritecycle.Thisbitwillbeautomaticallyresettozerobythe
hardwareafterthewritecyclehasfinished.Settingthisbithighwillhavenoeffectif
theWRENhasnotfirstbeensethigh.
Bit1
RDEN:DataEEPROMreadenable
0:Disable
1:Enable
ThisistheDataEEPROMReadEnableBitwhichmustbesethighbeforeData
EEPROMreadoperationsarecarriedout.ClearingthisbittozerowillinhibitData
EEPROMreadoperations.
Bit0
RD:EEPROMreadcontrol
0:Readcyclehasfinished
1:Activateareadcycle
ThisistheDataEEPROMReadControlBitandwhensethighbytheapplication
programwillactivateareadcycle.Thisbitwillbeautomaticallyresettozerobythe
hardwareafterthereadcyclehasfinished.Settingthisbithighwillhavenoeffectif
theRDENhasnotfirstbeensethigh.
Note:TheWREN,WR,RDENandRDcannotbesetto“1”atthesametimeinoneinstruction.The
WRandRDcannotbesetto“1”atthesametime.



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