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HT69F50A Datasheet(PDF) 49 Page - Holtek Semiconductor Inc

Part # HT69F50A
Description  TinyPowerTM I/O Flash 8-Bit MCU with LCD & EEPROM
PDF  202 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT69F50A Datasheet(HTML) 49 Page - Holtek Semiconductor Inc

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Rev. 1.00
48
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HT69F30A/HT69F40A/HT69F50A
TinyPowerTM I/O Flash 8-Bit MCU with LCD & EEPROM
HT69F30A/HT69F40A/HT69F50A
TinyPowerTM I/O Flash 8-Bit MCU with LCD & EEPROM
• HT69F40A/HT69F50A
Bit
7
6
5
4
3
2
1
0
Name
—
EEA6
EEA5
EEA4
EEA�
EEA�
EEA1
EEA0
R/W
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
—
x
x
x
x
x
x
x
“x”: unknown
Bit7
Unimplemented,readas"0"
Bit6~0
EEA6~EEA0:DataEEPROMaddressbit6~bit0
EED Register
Bit
7
6
5
4
3
2
1
0
Name
EED5
EED4
EED5
EED4
EED�
EED�
EED1
EED0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
x
x
x
x
x
x
x
x
“x”: unknown
Bit7~0
EED7~EED0: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,readas“0”
Bit3
WREN:DataEEPROMwriteoperationenable
0:Disable
1:Enable
ThisistheDataEEPROMWriteOperationEnablebitwhichmustbesethighbefore
DatatEEPROMwriteoperationsarecarriedout.Clearingthisbittozerowillinhibit
DataEEPROMwriteoperations.
Bit2
WR:DataEEPROMwritecontrol
0:Writecyclehasfinished
1:Activateawritecycle
ThisistheDataEEPROMWriteControlbitandwhensethighbytheapplication
programwillactivateawritecycle.Thisbitwillbeautomaticallyresettozerobythe
hardwareafterthewritecyclehasfinished.Settingthisbithighwillhavenoeffectif
theWRENbithasnotfirstbeensethigh.
Bit1
RDEN:DataEEPROMreadoperationenable
0:Disable
1:Enable
ThisistheDataEEPROMReadOperationEnablebitwhichmustbesethighbefore
DatatEEPROMreadoperationsarecarriedout.Clearingthisbittozerowillinhibit
DataEEPROMreadoperations.
Bit0
RD:DataEEPROMreadcontrol
0:Readcyclehasfinished
1:Activateareadcycle
ThisistheDataEEPROMReadControlbitandwhensethighbytheapplication
programwillactivateareadcycle.Thisbitwillbeautomaticallyresettozerobythe
hardwareafterthereadcyclehasfinished.Settingthisbithighwillhavenoeffectif
theRDENbithasnotfirstbeensethigh.
Note:TheWREN,WR,RDENandRDbitscannotbesetto“1”atthesametimeinoneinstruction.
TheWRandRDbitscannotbesetto“1”atthesametime.



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