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HT66F4530 Datasheet(PDF) 176 Page - Holtek Semiconductor Inc

Part # HT66F4530
Description  A/D Flash MCU with Dual Operational Amplifiers
PDF  224 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F4530 Datasheet(HTML) 176 Page - Holtek Semiconductor Inc

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Rev. 1.00
17�
De�e��e� �1� �01�
Rev. 1.00
177
De�e��e� �1� �01�
HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
Voice D/A Converter – HT66F4550
TheHT66F4550devicecontainsafullyintegrated16-bitVoiceD/Aconvertercircuitcompletewith
bufferoutputtogetherwithanoperationalamplifier,whichcanbeusedforaudioapplication.Its
referencecomesfromanalogsupplyonly,andcanbepowerdowntosavepower.The16-bitD/A
Converterisgoodforvoiceoraudioapplication.AlthoughthisD/AConverterisnotgeneralone-to-
onedigitaltoanalogconversion,itprovidesnotbadandsameaudioqualitynomatterwhatsmallor
bigvoice.Finally,D/AConvertervoltageisamplifiedandbufferoutputbytheoperationalamplifier.
OPAMP
DACO
D[15:0]
DACEN
+
-
RR
1�-�it Voi�e
D/A Conve�te�
Voice D/A Converter Block Diagram
Voice D/A Converter Control Registers
TheoverallvoiceD/AConverterfunctioniscontrolledusingseveralregisters.TheDACCregisteris
usedtocontroltheD/AConverterfunctionenableordisable.TheDAHandDALregisterpairexists
tostorea16-bitwidevoicedata.
DAH Register
Bit
7
6
5
4
3
2
1
0
Na�e
D15
D14
D13
D1�
D11
D10
D9
D8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit7~0
D15~D8:16-bitVoiceD/AConverterdatahighbyte
The16-bitVoiceD/AConverterDatalowbyteregister,knownasDAL,shouldfirst
bemodifiedandthenfollowedbytheDAHregistermodification.Eachtimewhenthe
DAHregisteriswritten,thewhole16-bitdatawillbeloadedintotheD/Aconverter
andaconversioncyclewillbeinitiated.NotethattheD/Aconvertershouldfirstbe
enabledbeforetheD/Adataisupdated.
DAL Register
Bit
7
6
5
4
3
2
1
0
Na�e
D7
D�
D5
D4
D3
D�
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit7~0
D7~D0:16-bitVoiceD/AConverterdatalowbyte
WritingthisregisterwillonlywritethedatatotheshadowbufferandwritingtheDAH
registerwillsimultaneouslycopytheshadowbufferdatatotheDALregister.Note
thattheD/AconvertershouldfirstbeenabledbeforetheD/Adataisupdated.



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