HT45F75 datasheet(154/190 Pages) HOLTEK

154 / 190 page

Rev. 1.10

15�

De�e��e� 1�� 01�

Rev. 1.10

155

De�e��e� 1�� 01�

HT45F75

Body Fat Scale Flash MCU

HT45F75

Body Fat Scale Flash MCU

Serial Interface Module Interrupt

TheSerialInterfaceModuleInterrupt,alsoknownastheSIMinterrupt,iscontainedwithinthe

Multi-functionInterrupt.AnSIMInterruptrequestwilltakeplacewhentheSIMInterruptrequest

flag,SIF,isset,whichoccurswhenabyteofdatahasbeenreceivedortransmittedbytheSIM

interface.Toallowtheprogramtobranchtoitsrespectiveinterruptvectoraddress,theglobal

interruptenablebit,EMI,andtheSerialInterfaceInterruptenablebit,SIE,andMuti-function

interruptenablebits,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullandabyte

ofdatahasbeentransmittedorreceivedbytheSIMinterface,asubroutinecalltotherespective

Multi-functionInterruptvector,willtakeplace.WhentheSerialInterfaceInterruptisserviced,the

EMIbitwillbeautomaticallyclearedtodisableotherinterrupts,howeveronlytheMulti-function

interruptrequestflagwillbealsoautomaticallycleared.AstheSIFflagwillnotbeautomatically

cleared,ithastobeclearedbytheapplicationprogram.

Time Base Interrupts

ThefunctionoftheTimeBaseInterruptsistoprovideregulartimesignalintheformofaninternal

interrupt.Theyarecontrolledbytheoverflowsignalsfromtheirrespectivetimerfunctions.When

thesehappenstheirrespectiveinterruptrequestflags,TB0ForTB1Fwillbeset.Toallowthe

programtobranchtotheirrespectiveinterruptvectoraddresses,theglobalinterruptenablebit,EMI

andTimeBaseenablebits,TB0EorTB1E,mustfirstbeset.Whentheinterruptisenabled,thestack

isnotfullandtheTimeBaseoverflows,asubroutinecalltotheirrespectivevectorlocationswill

takeplace.Whentheinterruptisserviced,therespectiveinterruptrequestflag,TB0ForTB1F,will

beautomaticallyresetandtheEMIbitwillbeclearedtodisableotherinterrupts.

ThepurposeoftheTimeBaseInterruptistoprovideaninterruptsignalatfixedtimeperiods.Their

clocksourcesoriginatefromtheinternalclocksourcefTB.ThisfTBinputclockpassesthrougha

divider,thedivisionratioofwhichisselectedbyprogrammingtheappropriatebitsintheTBC

registertoobtainlongerinterruptperiodswhosevalueranges.TheclocksourcethatgeneratesfTB,

whichinturncontrolstheTimeBaseinterruptperiod,canoriginatefromseveraldifferentsources,

asshownintheSystemOperatingModesection.

LX T

LI RC

f SY S /4

¸ 2 ~ 2

81 5

¸ 2 ~ 2

TB 11 ~T B1 0

Ti me B as e 0 In te rr upt

Ti me B as e 1 In te rr upt

Co nf ig ur at io n

Op ti o n

TB CK B it

TB 02 ~T B0 0

f TB

f SU B

Time Base Interrupt

HT45F75 데이터시트(PDF) 154 Page - Holtek Semiconductor Inc

HT45F75 데이터시트(HTML) 154 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

데이터시트 다운로드

링크 URL