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HT45F56 Datasheet(PDF) 64 Page - Holtek Semiconductor Inc

Part # HT45F56
Description  Shock Detector Flash MCU
PDF  90 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F56 Datasheet(HTML) 64 Page - Holtek Semiconductor Inc

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Rev. 1.11
64
April 11, 2017
Rev. 1.11
65
April 11, 2017
HT45F56
Shock Detector Flash MCU
HT45F56
Shock Detector Flash MCU
Operational Amplifier
Thisdevicecontainsanoperationalamplifierwithprogrammablegainselections,whichisused
toamplifythesmallanaloginputsignal.Afteramplificationtheoutputsignalcanbesenttothe
comparatorpositiveinputtocomparewiththenegativeinputsignal.Theoverallfunctionis
controlledbytheOPACandOPGAregisters.
Register
Name
Bit
7
6
5
4
3
2
1
0
OPAC
—
OPAEN
—
—
—
—
CKS1
CKS0
OPGA
—
—
—
—
GAS3
GAS2
GAS1
GAS0
Operational Amplifier Registers List
OPAC Register
Bit
7
6
5
4
3
2
1
0
Name
—
OPAEN
—
—
—
—
CKS1
CKS0
R/W
—
R/W
—
—
—
—
R/W
R/W
POR
—
1
—
—
—
—
0
0
Bit7
Unimplemented,readas“0”
Bit6
OPAEN:OperationalAmplifierEnablecontrol
0:Disable
1:Enable
Bit5~2
Unimplemented,readas“0”
Bit1~0
CKS1~CKS0:D/Aconverterclocksourceselection
Describedelsewhere.
OPGA Register
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
GAS3
GAS2
GAS1
GAS0
R/W
—
—
—
—
R/W
R/W
R/W
R/W
POR
—
—
—
—
1
1
1
1
Bit7~4
Unimplemented,readas“0”
Bit3~0
GAS3~GAS0:OperationalAmplifiergainselection
0000: Gain = 1
0100: Gain = 10
1000: Gain = 15
1100: Gain = 25
0001: Gain = 10
0101: Gain = 100
1001: Gain = 150
1101: Gain = 250
0010: Gain = 30
0110: Gain = 300
1010: Gain = 450
1110: Gain = 750
0011: Gain = 40
0111: Gain = 400
1011: Gain = 600
1111: Gain = 1000



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