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HT45F75 Datasheet(PDF) 162 Page - Holtek Semiconductor Inc

Part # HT45F75
Description  Body Fat Scale Flash MCU
PDF  190 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F75 Datasheet(HTML) 162 Page - Holtek Semiconductor Inc

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Rev. 1.10
1��
De�e��e� 1�� �01�
Rev. 1.10
1�3
De�e��e� 1�� �01�
HT45F75
Body Fat Scale Flash MCU
HT45F75
Body Fat Scale Flash MCU
SGC Register
Bit
7
6
5
4
3
2
1
0
Na�e
SGEN
—
—
BREN
—
—
—
—
R/W
R/W
—
—
R/W
—
—
—
—
POR
0
—
—
0
—
—
—
—
Bit7
SGEN:sinegeneratorenablebit
0:Disable
1:Enable
Whenthisbitisequalto“0”,theOP0and10-bitDACwillbeinapowerdownmode.
Bit6~5
Unimplemented,readas“0”
Bit4
BREN:Biasresistorenablebit
0:Disable-powerdownmode
1:Enable-normalmode
Whenthisbitisenabled,itwillgeneratea0.5×AVDDvoltageforthenon-inverting
inputofOPA1andOPA2.
Bit3~0
Unimplemented,readas“0”
SGN Register
Bit
7
6
5
4
3
2
1
0
Na�e
—
—
D5
D�
D3
D�
D1
D0
R/W
—
—
R/W
R/W
R/W
R/W
R/W
R/W
POR
—
—
0
0
0
0
0
0
Bit7~6
Unimplemented,readas“0”
Bit5~0
D5~D0:SineGeneratorData
Systemfrequencymultiplicator,N,isequaltoD[5:0]+1.
SGDNR Register
Bit
7
6
5
4
3
2
1
0
Na�e
—
—
—
D�
D3
D�
D1
D0
R/W
—
—
—
R/W
R/W
R/W
R/W
R/W
POR
—
—
—
0
0
0
0
0
Bit7~5
Unimplemented,readas“0”
Bit4~0
D4~D0:DataNumberofSample
1/2sinewavecyclenumericalvalueisstoredinRAMSector2.DNRisequalto
D[4:0]+1.
Amplifier
TheamplifierconsistsofOP1,OP2,a6-bitDACandanalogswitches.OP2isadifferentialamplifier
with1~5multiplegain.The6-bitDACoffersareferencevoltagetothenon-invertinginputofOP2.
Theusercanturnonandoffswitch0to7toobtainareferenceresistorvoltageandabodyresistor
voltage.
ThebodyandreferenceimpedancecanbeobtainedbyusingtheSW0~SW7switches.Referto
followingtableforthisimpedanceswitching.
Switch
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Foot I�pedan�e
O
O
O
Reference 1kΩ
O
O
O
Reference 200Ω
O
O
O
O: Swit�h is on



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