ht1622

HT1622RAMMapping32
8LCDControllerforI/OCSelectionTableHT162XHT1620HT1621HT1622HT16220HT1623HT1625HT1626HT1627HT16270COM448888161616SEG323232324864486464Built-inOsc.





CrystalOsc.






1April21,2000GeneralDescriptionHT1622isaperipheraldevicespeciallyde-signedforI/OtypeCusedtoexpandthedis-playcapability.Themax.displaysegmentofthedeviceare256patterns(328).Italsosup-portsserialinterface,buzzersound,WatchdogTimerortimebasetimerfunctions.TheHT1622isamemorymappingandmulti-func-tionLCDcontroller.ThesoftwareconfigurationfeatureoftheHT1622makeitsuitableformul-tipleLCDapplicationsincludingLCDmodulesanddisplaysubsystems.Onlythreelinesarerequiredfortheinterfacebetweenthehostcon-trollerandtheHT1622.TheHT162Xserieshavemanykindsofproductsthatmatchvari-ousapplications.FeaturesOperatingvoltage:2.7V~5.2VBuilt-inRCoscillator1/4bias,1/8duty,framefrequencyis64HzMax.328patterns,8commons,32segmentsBuilt-ininternalresistortypebiasgenerator3-wireserialinterface8kindsoftimebase/WDTselectionTimebaseorWDToverflowoutputBuilt-inLCDdisplayRAMR/WaddressautoincrementTwoselectablebuzzerfrequencies(2kHz/4kHz)PowerdowncommandreducespowerconsumptionSoftwareconfigurationfeatureDatamodeandCommandmodeinstructionsThreedataaccessingmodesVLCDpintoadjustLCDoperatingvoltageCascadeapplicationBlockDiagramPinAssignmentHT16222April21,2000












    
























  !#$%&'()!%&'$*'$')'((%*+,-$$(%.'(/%*$%(0%)(,)!%&%)#%(0%



)'$1('20')-')'((

PadAssignmentChipsize:149155(mil)2*TheICsubstrateshouldbeconnectedtoVDDinthePCBlayoutartwork.HT16223April21,2000     345



































PadCoordinatesUnit:milPadNo.XYPadNo.XY168.4371.782848.1571.91268.4359.462954.7871.91368.4352.833069.3210.67469.1939.143169.324.04569.3623.893269.322.59669.3616.323369.329.22769.369.693469.3215.85869.363.063569.3222.48969.363.573669.3229.111069.3616.923769.3235.741169.3633.833869.3242.371269.3643.523969.3249.001369.3650.154069.3255.631469.3656.784169.3262.261569.3663.414269.3268.891669.3670.044314.1971.781739.2371.14447.5771.781832.6071.14450.9471.781920.1971.14465.7071.782013.5671.144712.3271.78211.1571.144818.9571.78225.4871.144925.5871.782315.0071.915032.2271.782421.6371.915138.8571.782528.2671.915245.4771.782634.8971.915352.1071.782741.5271.915458.7471.78HT16224April21,2000PadDescriptionPadNo.PadNameI/ODescription1CSIChipselectioninputwithPull-highresistor.WhentheCSislogichigh,thedataandcommandreadfromorwrittentotheHT1622aredisabled.Theserialinterfacecircuitisalsoreset.ButifCSisatlogiclowlevelandisinputtotheCSpad,thedataandcom-mandtransmissionbetweenthehostcontrollerandtheHT1622areallenabled.2RDIREADclockinputwithPull-highresistor.DataintheRAMoftheHT1622areclockedoutontherisingedgeoftheRDsignal.Theclockedoutdatawillappearonthedataline.Thehostcon-trollercanusethenextfallingedgetolatchtheclockedoutdata.3WRIWRITEclockinputwithPull-highresistor.DataontheDATAlinearelatchedintotheHT1622ontherisingedgeoftheWRsig-nal.4DATAI/OSerialdatainput/outputwithPull-highresistor5VSSNegativepowersupply,ground6OSCIIIfthesystemclockcomesfromanexternalclocksource,theex-ternalclocksourceshouldbeconnectedtotheOSCIpad.7VDDPositivepowersupply8VLCDILCDoperatingvoltageinputpad9IRQOTimebaseorWatchdogTimeroverflowflag,NMOSopendrainoutput10,11BZ,BZO2kHzor4kHztonefrequencyoutputpair12~14T1~T3INotconnected15~22COM0~COM7OLCDcommonoutputs23~54SEG0~SEG31OLCDsegmentoutputsAbsoluteMaximumRatingsSupplyVoltage..............................0.3Vto5.5VStorageTemperature.................50Cto125CInputVoltage................VSS0.3VtoVDD+0.3VOperatingTemperature..............25Cto75CNote:Thesearestressratingsonly.StressesexceedingtherangespecifiedunderAbsoluteMaxi-mumRatingsmaycausesubstantialdamagetothedevice.Functionaloperationofthisde-viceatotherconditionsbeyondthoselistedinthespecificationisnotimpliedandprolongedexposuretoextremeconditionsmayaffectdevicereliability.HT16225April21,2000D.C.CharacteristicsTa=25CSymbolParameterTestConditionsMin.Typ.Max.UnitVDDConditionsVDDOperatingVoltage2.75.2VIDD1OperatingCurrent3VNoload/LCDONOn-chipRCoscillator80210A5V135415AIDD2OperatingCurrent3VNoload/LCDOFFOn-chipRCoscillator830A5V2055AISTBStandbyCurrent3VNoloadPowerdownmode18A5V216AVILInputLowVoltage3VDATA,WR,CS,RD00.6V5V01.0VVIHInputHighVoltage3VDATA,WR,CS,RD2.43V5V4.05VIOL1BZ,BZ,I