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HT66F4530 数据表(PDF) 57 Page - Holtek Semiconductor Inc

部件名 HT66F4530
功能描述  A/D Flash MCU with Dual Operational Amplifiers
PDF  224 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT66F4530 数据表(HTML) 57 Page - Holtek Semiconductor Inc

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Rev. 1.00
5�
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Rev. 1.00
57
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HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
SCC Register
Bit
7
6
5
4
3
2
1
0
Na�e
CKS�
CKS1
CKS0
—
FHS
FSS
FHIDEN
FSIDEN
R/W
R/W
R/W
R/W
—
R/W
R/W
R/W
R/W
POR
0
0
0
—
0
0
0
0
Bit7~5
CKS2~CKS0:Systemclockselection
000:fH
001:fH/2
010:fH/4
011:fH/8
100:fH/16
101:fH/32
110:fH/64
111:fSUB
Thesethreebitsareusedtoselectwhichclockisusedasthesystemclocksource.In
additiontothesystemclocksourcedirectlyderivedfromfHorfSUB,adividedversion
ofthehighspeedsystemoscillatorcanalsobechosenasthesystemclocksource.
Bit4
Unimplemented,readas0.
Bit3
FHS:HighFrequencyclockselection
0:HIRC
1:HXT
Bit2
FSS:LowFrequencyclockselection
0:LIRC
1:LXT
Bit1
FHIDEN:HighFrequencyoscillatorcontrolwhenCPUisswitchedoff
0:Disable
1:Enable
Thisbitisusedtocontrolwhetherthehighspeedoscillatorisactivatedorstopped
whentheCPUisswitchedoffbyexecutingan"HALT"instruction.
Bit0
FSIDEN:LowFrequencyoscillatorcontrolwhenCPUisswitchedoff
0:Disable
1:Enable
Thisbitisusedtocontrolwhetherthelowspeedoscillatorisactivatedorstopped
whentheCPUisswitchedoffbyexecutingan"HALT"instruction.TheLIRC
oscillatoriscontrolledbythisbittogetherwiththeWDTfunctionenablecontrol.If
thisbitisclearedto0buttheWDTfunctionisenabled,thefLIRCclockwillalsobe
enabled.
HIRCC Register
Bit
7
6
5
4
3
2
1
0
Na�e
—
—
—
—
HIRC1
HIRC0
HIRCF
HIRCEN
R/W
—
—
—
—
R/W
R/W
R
R/W
POR
—
—
—
—
0
0
0
1
Bit7~4
Unimplemented,readas0.
Bit3~2
HIRC1~HIRC0:HIRCfrequencyselection
00:2MHz
01:4MHz
10:8MHz
11:2MHz
WhentheHIRCoscillatorisenabledortheHIRCfrequencyselectionischanged
byapplicationprogram,theclockfrequencywillautomaticallybechangedafterthe
HIRCFflagissetto1.



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