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HT66F005 Datasheet(PDF) 48 Page - Holtek Semiconductor Inc

Part # HT66F005
Description  Cost-Effective A/D Flash MCU with EEPROM
PDF  109 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F005 Datasheet(HTML) 48 Page - Holtek Semiconductor Inc

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Rev. 1.30
48
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Rev. 1.30
49
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HT66F005/HT66F006
Cost-Effective A/D Flash MCU with EEPROM
HT66F005/HT66F006
Cost-Effective A/D Flash MCU with EEPROM
• WatchdogTime-outResetduringNormalOperation
TheWatchdogtime-outResetduringnormaloperationisthesameasaPower-onresetexcept
thattheWatchdogtime-outflagTOwillbesetto“1”.
t RS TD + t SST
WD T Ti me - out
In te r nal R es et
Note:tRSTDispower-ondelay,typicaltime=16.7ms
WDT Time-out Reset during Normal Operation Timing Chart
• WatchdogTime-outResetduringSLEEPorIDLEMode
TheWatchdogtime-outResetduringSLEEPorIDLEModeisalittledifferentfromotherkinds
ofreset.MostoftheconditionsremainunchangedexceptthattheProgramCounterandtheStack
Pointerwillbeclearedto“0”andtheTOflagwillbesetto“1”.RefertotheA.C.Characteristics
fortSSTdetails.
t SST
WD T Ti me - out
In te r nal R es et
Note:ThetSSTis15~16clockcyclesifthesystemclocksourceisprovidedbyHIRC.
ThetSSTis1024clockforHXT.ThetSSTis1~2clockforLIRC.
WDT Time-out Reset during SLEEP or IDLE Timing Chart
WDTC Register Software Reset
AWDTCsoftwareresetwillbegeneratedwhenavalueotherthan“10101”or“01010”,existin
thehighestfivebitsoftheWDTCregister.TheWRFbitintheCTRLregisterwillbesethigh
whenthisoccurs,thusindicatingthegenerationofaWDTCsoftwarereset.
• WDTC Register
Bit
7
6
5
4
3
2
1
0
Name
WE4
WE3
WE�
WE1
WE0
WS�
WS1
WS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
1
0
1
0
0
1
1
Bit7~3
WE4, WE3, WE2, WE1, WE0:WDTSoftwareControl
10101:WDTDisable
01010:WDTEnable(default)
Other:MCUreset
Bit2~0
WS2, WS1, WS0:WDTtime-outperiodselection
Describedelsewhere



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