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HT45F3520 Datasheet(PDF) 49 Page - Holtek Semiconductor Inc

Part # HT45F3520
Description  Personal Care Flash MCU
PDF  134 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F3520 Datasheet(HTML) 49 Page - Holtek Semiconductor Inc

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Rev. 1.10
48
De�e��e� 1�� �01�
Rev. 1.10
49
De�e��e� 1�� �01�
HT45F3520/HT45F3530
Personal Care Flash MCU
HT45F3520/HT45F3530
Personal Care Flash MCU
• SMOD1 Register
Bit
7
6
5
4
3
2
1
0
Na�e
FSYSON
—
—
—
—
LVRF
—
WRF
R/W
R/W
—
—
—
—
R/W
—
R/W
POR
0
—
—
—
—
x
—
0
"x" unknown
Bit7
FSYSON:fSYSControlinIDLEMode
Describeelsewhere
Bit6~3
Unimplemented,readas"0"
Bit2
LVRF:LVRfunctionresetflag
0:Notoccur
1:Occurred
Thisbitcanbeclearto"0",butcannotbesetto"1".
Bit1
Unimplemented,readas"0"
Bit0
WRF:WDTControlregistersoftwareresetflag
Describeelsewhere
Watchdog Time-out Reset during Normal Operation
TheWatchdogtime-outResetduringnormaloperationisthesameasanLVRresetexceptthatthe
Watchdogtime-outflagTOwillbesetto"1".
WDT Ti�e-out
Inte�nal Reset
tRSTD + tSST
WDT Time-out Reset during Normal Operation Timing Chart
Watchdog Time-out Reset during SLEEP or IDLE Mode
TheWatchdogtime-outResetduringSLEEPorIDLEModeisalittledifferentfromotherkinds
ofreset.MostoftheconditionsremainunchangedexceptthattheProgramCounterandtheStack
Pointerwillbeclearedto"0"andtheTOflagwillbesetto"1".RefertotheA.C.Characteristicsfor
tSSTdetails.
WDT Ti�e-out
Inte�nal Reset
tSST
WDT Time-out Reset during SLEEP or IDLE Timing Chart



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