HT66F4530 datasheet(144/224 Pages) HOLTEK

144 / 224 page

Rev. 1.00

144

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Rev. 1.00

145

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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

Bit3

TXAK:I2CBustransmitacknowledgeflag

0:Slavesendacknowledgeflag

1:Slavedonotsendacknowledgeflag

TheTXAKbitisthetransmitacknowledgeflag.Aftertheslavedevicereceiptof8bits

ofdata,thisbitwillbetransmittedtothebusonthe9thclockfromtheslavedevice.

TheslavedevicemustalwayssetTXAKbitto"0"beforefurtherdataisreceived.

Bit2

SRW:I2CSlaveRead/Writeflag

0:Slavedeviceshouldbeinreceivemode

1:Slavedeviceshouldbeintransmitmode

TheSRWflagistheI2CSlaveRead/Writeflag.Thisflagdetermineswhether

themasterdevicewishestotransmitorreceivedatafromtheI2Cbus.Whenthe

transmittedaddressandslaveaddressismatch,thatiswhentheHAASflagissethigh,

theslavedevicewillchecktheSRWflagtodeterminewhetheritshouldbeintransmit

modeorreceivemode.IftheSRWflagishigh,themasterisrequestingtoreaddata

fromthebus,sotheslavedeviceshouldbeintransmitmode.WhentheSRWflag

iszero,themasterwillwritedatatothebus,thereforetheslavedeviceshouldbein

receivemodetoreadthisdata.

Bit1

IAMWU:I2CAddressMatchWake-upcontrol

0:Disable

1:Enable

Thisbitshouldbesetto1toenabletheI2CaddressmatchwakeupfromtheSLEEP

orIDLEMode.IftheIAMWUbithasbeensetbeforeenteringeithertheSLEEPor

IDLEmodetoenabletheI2Caddressmatchwakeup,thenthisbitmustbeclearedby

theapplicationprogramafterwake-uptoensurecorrectiondeviceoperation.

Bit0

RXAK:I2CBusReceiveacknowledgeflag

0:Slavereceiveacknowledgeflag

1:Slavedoesnotreceiveacknowledgeflag

TheRXAKflagisthereceiveracknowledgeflag.WhentheRXAKflagis"0",it

meansthataacknowledgesignalhasbeenreceivedatthe9thclock,after8bitsofdata

havebeentransmitted.Whentheslavedeviceinthetransmitmode,theslavedevice

checkstheRXAKflagtodetermineifthemasterreceiverwishestoreceivethenext

byte.TheslavetransmitterwillthereforecontinuesendingoutdatauntiltheRXAK

flagis"1".Whenthisoccurs,theslavetransmitterwillreleasetheSDAlinetoallow

themastertosendaSTOPsignaltoreleasetheI2CBus.

HT66F4530 数据表(PDF) 144 Page - Holtek Semiconductor Inc

HT66F4530 数据表(HTML) 144 Page - Holtek Semiconductor Inc

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