HT69F360 datasheet(178/235 Pages) HOLTEK

178 / 235 page

Rev. 1.30

17�

�ove��e� 1�� 01�

Rev. 1.30

179

�ove��e� 1�� 01�

HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

Address detect mode

SettingtheAddressDetectModebit,ADDEN,intheUCR2register,enablesthisspecialmode.If

thisbitisenabledthenanadditionalqualifierwillbeplacedonthegenerationofaReceiverData

Availableinterrupt,whichisrequestedbytheRXIFflag.IftheADDENbitisenabled,thenwhen

dataisavailable,aninterruptwillonlybegenerated,ifthehighestreceivedbithasahighvalue.

NotethattheMFE,UREandEMIinterruptenablebitsmustalsobeenabledforcorrectinterrupt

generation.Thishighestaddressbitisthe9thbitifBNO=1orthe8thbitifBNO=0.Ifthisbit

ishigh,thenthereceivedwordwillbedefinedasanaddressratherthandata.ADataAvailable

interruptwillbegeneratedeverytimethelastbitofthereceivedwordisset.IftheADDENbit

isnotenabled,thenaReceiverDataAvailableinterruptwillbegeneratedeachtimetheRXIF

flagisset,irrespectiveofthedatalastbitstatus.Theaddressdetectmodeandparityenableare

mutuallyexclusivefunctions.Thereforeiftheaddressdetectmodeisenabled,thentoensurecorrect

operation,theparityfunctionshouldbedisabledbyresettingtheparityenablebittozero.

ADDEN

Bit 9 if BNO=1,

Bit 8 if BNO=0

UART Interrupt

Generated

√

ADDEN Bit Function

UART Module Power Down and Wake-up

WhenthefSYSisoff,theUARTwillceasetofunction.Allclocksourcestothemoduleareshutdown.

IfthefSYSisoffwhileatransmissionisstillinprogress,thenthetransmissionwillbepauseduntil

theUARTclocksourcederivedfromthemicrocontrollerisactivated.Inasimilarway,iftheMCU

entersthePowerDownModewhilereceivingdata,thenthereceptionofdatawilllikewisebe

paused.WhentheMCUentersthePowerDownMode,notethattheUSR,UCR1,UCR2,transmit

andreceiveregisters,aswellastheBRGregisterwillnotbeaffected.Itisrecommendedtomake

surefirstthattheUARTdatatransmissionorreceptionhasbeenfinishedbeforethemicrocontroller

entersthePowerDownmode.

TheUARTfunctioncontainsareceiverRXpinwake-upfunction,whichisenabledordisabled

bytheWAKEbitintheUCR2register.Ifthisbit,alongwiththeUARTenablebit,UARTEN,the

receiverenablebit,RXENandthereceiverinterruptbit,RIE,areallsetbeforetheMCUenters

thePowerDownMode,thenafallingedgeontheRXpinwillwakeuptheMCUfromthePower

DownMode.Notethatasittakescertainsystemclockcyclesafterawake-up,beforenormal

microcontrolleroperationresumes,anydatareceivedduringthistimeontheRXpinwillbeignored.

ForaUARTwake-upinterrupttooccur,inadditiontothebitsforthewake-upbeingset,theglobal

interruptenablebit,EMI,andtheUARTinterruptenablebit,UARE,mustalsobeset.Ifthesetwo

bitsarenotsetthenonlyawakeupeventwilloccurandnointerruptwillbegenerated.Notealso

thatasittakescertainsystemclockcyclesafterawake-upbeforenormalmicrocontrollerresumes,

theUARTinterruptwillnotbegenerateduntilafterthistimehaselapsed.

HT69F360 数据表(PDF) 178 Page - Holtek Semiconductor Inc

HT69F360 数据表(HTML) 178 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载