HT69F360 datasheet(156/235 Pages) HOLTEK

156 / 235 page

Rev. 1.30

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Rev. 1.30

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HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

Bit3

TXAK:I2CBustransmitacknowledgeflag

0:Slavesendacknowledgeflag

1:Slavedonotsendacknowledgeflag

TheTXAKbitisthetransmitacknowledgeflag.Aftertheslavedevicereceiptof8-bits

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–mustbeclearedbytheapplicationprogramafterwake-up

Thisbitshouldbesetto1toenabletheI2CaddressmatchwakeupfromtheSLEEP

orIDLEMode.IftheIAMWUbithasbeensetbeforeenteringtheSLEEPorIDLE

modetoenabletheI2Caddressmatchwakeup,thenthisbitmustbeclearedbythe

applicationprogramafterwake-uptoensurecorrectiondeviceoperation.

Bit0

RXAK:I2CBusReceiveacknowledgeflag

0:Slavereceiveacknowledgeflag

1:Slavedonotreceiveacknowledgeflag

TheRXAKflagisthereceiveracknowledgeflag.WhentheRXAKflagis“0”,it

meansthataacknowledgesignalhasbeenreceivedatthe9thclock,after8bitsofdata

havebeentransmitted.Whentheslavedeviceinthetransmitmode,theslavedevice

checkstheRXAKflagtodetermineifthemasterreceiverwishestoreceivethenext

byte.TheslavetransmitterwillthereforecontinuesendingoutdatauntiltheRXAK

flagis“1”.Whenthisoccurs,theslavetransmitterwillreleasetheSDAlinetoallow

themastertosendaSTOPsignaltoreleasetheI2CBus.

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