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HT45F2020 датащи(PDF) 27 Page - Holtek Semiconductor Inc

номер детали HT45F2020
подробное описание детали  Sound Effect Generator Flash MCU
PDF  85 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
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HT45F2020 датащи(HTML) 27 Page - Holtek Semiconductor Inc

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Rev. 1.00
26
April 11, 2017
Rev. 1.00
27
April 11, 2017
HT45F2020/HT45F2022
Sound Effect Generator Flash MCU
HT45F2020/HT45F2022
Sound Effect Generator Flash MCU
Control Register
Theregisters,SCCandHIRCC,areusedtocontrolthesystemclockandthecorresponding
oscillatorconfigurations.
Register
Name
Bit
7
6
5
4
3
2
1
0
SCC
CKS2
CKS1
CKS0
—
—
—
FHIDEN FSIDEN
HIRCC
—
—
—
—
—
—
HIRCF
HIRCEN
System Operating Mode Control Registers List
SCC Register
Bit
7
6
5
4
3
2
1
0
Name
CKS2
CKS1
CKS0
—
—
—
FHIDEN
FSIDEN
R/W
R/W
R/W
R/W
—
—
—
R/W
R/W
POR
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.
Bit4~2
Unimplemented,readas“0”
Bit1
FHIDEN:HighFrequencyoscillatorcontrolwhenCPUisswitchedoff
0:Disable
1:Enable
Thisbitisusedtocontrolwhetherthehighspeedoscillatorisactivatedorstopped
whentheCPUisswitchedoffbyexecutingan“HALT”instruction.
Bit0
FSIDEN:LowFrequencyoscillatorcontrolwhenCPUisswitchedoff
0:Disable
1:Enable
Thisbitisusedtocontrolwhetherthelowspeedoscillatorisactivatedorstopped
whentheCPUisswitchedoffbyexecutingan“HALT”instruction.



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