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HT66F005 датащи(PDF) 47 Page - Holtek Semiconductor Inc

номер детали HT66F005
подробное описание детали  Cost-Effective A/D Flash MCU with EEPROM
PDF  109 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F005 датащи(HTML) 47 Page - Holtek Semiconductor Inc

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Rev. 1.30
46
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HT66F005/HT66F006
Cost-Effective A/D Flash MCU with EEPROM
HT66F005/HT66F006
Cost-Effective A/D Flash MCU with EEPROM
LVRC Register
Bit
7
6
5
4
3
2
1
0
Name
LVS�
LVS6
LVS5
LVS4
LVS3
LVS�
LVS1
LVS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
1
0
1
0
1
0
1
Bit7~0
LVS7~LVS0:LVRVoltageSelectcontrol
01010101:2.1V
00110011:2.55V
10011001:3.15V
10101010:3.8V
Anyothervalue:GeneratesMCUreset–registerisresettoPORvalue
Whenanactuallowvoltageconditionoccurs,asspecifiedbyoneofthefourdefined
LVRvoltagevaluesabove,anMCUresetwillbegenerated.Theresetoperationwill
beactivatedafter2~3LIRCclockcycles.Inthissituationtheregistercontentswill
remainthesameaftersucharesetoccurs.
Anyregistervalue,otherthanthefourdefinedLVRvaluesabove,willalsoresultin
thegenerationofanMCUreset.Theresetoperationwillbeactivatedafter2~3LIRC
clockcycles.HoweverinthissituationtheregistercontentswillberesettothePOR
value.
CTRL Register
Bit
7
6
5
4
3
2
1
0
Name
FSYSON
—
—
—
—
LVRF
LRF
WRF
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
x
0
0
Bit7
FSYSON:fSYSControlinIDLEMode
Describeelsewhere.
Bit6~3
Unimplemented,readas0
Bit2
LVRF:LVRfunctionresetflag
0:Notoccur
1:Occurred
Thisbitissetto1whenaspecificLowVoltageResetsituationconditionoccurs.This
bitcanonlybeclearedto0bytheapplicationprogram.
Bit1
LRF:LVRControlregistersoftwareresetflag
0:Notoccur
1:Occurred
Thisbitissetto1iftheLVRCregistercontainsanynondefinedLVRvoltageregister
values.Thisineffectactslikeasoftwareresetfunction.Thisbitcanonlybeclearedto
0bytheapplicationprogram.
Bit0
WRF:WDTControlregistersoftwareresetflag
Describeelsewhere.



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