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HT66F4530 数据表(PDF) 153 Page - Holtek Semiconductor Inc

部件名 HT66F4530
功能描述  A/D Flash MCU with Dual Operational Amplifiers
PDF  224 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT66F4530 数据表(HTML) 153 Page - Holtek Semiconductor Inc

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Rev. 1.00
15�
De�e��e� �1� �01�
Rev. 1.00
153
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HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
HT66F4530/HT66F4540/HT66F4550
A/D Flash MCU with Dual Operational Amplifiers
Bit2
RXIF:ReceiveTXR_RXRdataregisterstatus
0:TXR_RXRdataregisterisempty
1:TXR_RXRdataregisterhasavailabledata
TheRXIFflagisthereceivedataregisterstatusflag.Whenthisreadonlyflagis"0",
itindicatesthattheTXR_RXRreaddataregisterisempty.Whentheflagis"1",it
indicatesthattheTXR_RXRreaddataregistercontainsnewdata.Whenthecontents
oftheshiftregisteraretransferredtotheTXR_RXRregister,aninterruptisgenerated
ifRIE=1intheUCR2register.Ifoneormoreerrorsaredetectedinthereceivedword,
theappropriatereceive-relatedflagsNF,FERR,and/orPERRaresetwithinthesame
clockcycle.TheRXIFflagisclearedwhentheUSRregisterisreadwithRXIFset,
followedbyareadfromtheTXR_RXRregister,andiftheTXR_RXRregisterhasno
dataavailable.
Bit1
TIDLE:Transmissionidle
0:Datatransmissionisinprogress(Databeingtransmitted)
1:Nodatatransmissionisinprogress(Transmitterisidle)
TheTIDLEflagisknownasthetransmissioncompleteflag.Whenthisreadonly
flagis"0",itindicatesthatatransmissionisinprogress.Thisflagwillbesethigh
whentheTXIFflagis"1"andwhenthereisnotransmitdataorbreakcharacterbeing
transmitted.WhenTIDLEisequalto"1",theTXpinbecomesidlewiththepinstate
inlogichighcondition.TheTIDLEflagisclearedbyreadingtheUSRregisterwith
TIDLEsetandthenwritingtotheTXR_RXRregister.Theflagisnotgeneratedwhen
adatacharacterorabreakisqueuedandreadytobesent.
Bit0
TXIF:TransmitTXR_RXRdataregisterstatus
0:Characterisnottransferredtothetransmitshiftregister
1:Characterhastransferredtothetransmitshiftregister(TXR_RXRdataregisterisempty)
TheTXIFflagisthetransmitdataregisteremptyflag.Whenthisreadonlyflagis"0",
itindicatesthatthecharacterisnottransferredtothetransmittershiftregister.When
theflagis"1",itindicatesthatthetransmittershiftregisterhasreceivedacharacter
fromtheTXR_RXRdataregister.TheTXIFflagisclearedbyreadingtheUART
statusregister(USR)withTXIFsetandthenwritingtotheTXR_RXRdataregister.
NotethatwhentheTXENbitisset,theTXIFflagbitwillalsobesetsincethetransmit
dataregisterisnotyetfull.
UCR1 Register
TheUCR1registertogetherwiththeUCR2registerarethetwoUARTcontrolregistersthatareused
tosetthevariousoptionsfortheUARTfunction,suchasoverallon/offcontrol,paritycontrol,data
transferbitlengthetc.Furtherexplanationoneachofthebitsisgivenbelow:
Bit
7
6
5
4
3
2
1
0
Na�e
UARTEN
BNO
PREN
PRT
STOPS
TXBRK
RX8
TX8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
W
POR
0
0
0
0
0
0
x
0
"x" unknown
Bit7
UARTEN:UARTfunctionenablecontrol
0:DisableUART.TXandRXpinsareusedasI/Oorotherpin-sharedfunctionalpins
1:EnableUART.TXandRXpinsfunctionasUARTpins
TheUARTENbitistheUARTenablebit.Whenthisbitisequalto"0",theUARTwill
bedisabledandtheRXpinaswellastheTXpinwillbeasGeneralPurposeI/Oorother
pin-sharedfunctionalpins.Whenthebitisequalto"1",theUARTwillbeenabledand
theTXandRXpinswillfunctionasdefinedbytheTXENandRXENenablecontrol
bits.



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