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HT67F5652 bảng dữ liệu(PDF) 122 Page - Holtek Semiconductor Inc

tên linh kiện HT67F5652
Giải thích chi tiết về linh kiện  24-Bit Delta Sigma A/D LCD Flash MCU
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nhà sản xuất  HOLTEK [Holtek Semiconductor Inc]
Trang chủ  http://www.holtek.com
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HT67F5652 bảng dữ liệu(HTML) 122 Page - Holtek Semiconductor Inc

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HT67F5652
24-Bit Delta Sigma A/D + LCD Flash MCU
HT67F5652
24-Bit Delta Sigma A/D + LCD Flash MCU
Programmable Gain Amplifier – PGA
Therearethreeregistersrelatedtotheprogrammablegaincontrol,PGAC0,PGAC1andPGACS.
ThePGAC0resisterisusedtoselectthePGAgain,ADCgainandtheADCreferencegain.As
well,thePGAC1registerisusedtodefinetheinputconnectionanddifferentialinputoffsetvoltage
adjustmentcontrol.Inaddition,ThePGACSregisterisusedtoselecttheinputendsforthePGA.
Therefore,theinputchannelshavetobedeterminedbytheCHSP2~CHSP0andCHSN2~CHSN0
bitstodeterminewhichanalogchannelinputpins,temperaturedetectorinputsorinternalpower
supplyareactuallyconnectedtotheinternaldifferentialA/Dconverter.
• PGAC0 Register
Bit
7
6
5
4
3
2
1
0
Na�e
—
VGS1
VGS0
AGS1
AGS0
PGS�
PGS1
PGS0
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
Unimplemented,readas"0"
Bit6~5
VGS1~VGS0:REFP/REFNdifferentialreferencevoltagegainselection
00:VREFGN=1
01:VREFGN=1/2
10:VREFGN=1/4
11:Reserved
Bit4~3
AGS1~AGS0:A/DconverterPGAOP/PGAONdifferentialinputsignalgainselection
00:ADGN=1
01:ADGN=2
10:ADGN=4
11:ADGN=8
Bit2~0
PGS2~PGS0:DI+/DI-differentialchannelinputgainselection
000:PGAGN=1
001:PGAGN=2
010:PGAGN=4
011:PGAGN=8
100:PGAGN=16
101:PGAGN=32
110:PGAGN=64
111:PGAGN=128
• PGAC1 Register
Bit
7
6
5
4
3
2
1
0
Na�e
—
INIS
INX1
INX0
DCSET� DCSET1 DCSET0
—
R/W
—
R/W
R/W
R/W
R/W
R/W
R/W
—
POR
—
0
0
0
0
0
0
—
Bit7
Unimplemented,readas"0"
Bit6
INIS:Selectedinputends,IN1andIN2internalconnectioncontrolbit
0:Notconnected
1:Connected
Bit5~4
INX1~INX0:Selectedinputends,IN1/IN2andthePGAdifferentialinputends,DI+/DI-
connectioncontrolbits
IN�
IN1
DI+
DI-
IN�
IN1
DI+
DI-
IN�
IN1
DI+
DI-
IN�
IN1
DI+
DI-
INX[1�0]=00
INX[1�0]=01
INX[1�0]=10
INX[1�0]=11



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