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HT45F3830 Datasheet(PDF) 37 Page - Holtek Semiconductor Inc |
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HT45F3830 Datasheet(HTML) 37 Page - Holtek Semiconductor Inc |
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37 / 149 page  Rev. 1.10 3� �an�a�� 0�� �01� Rev. 1.10 3� �an�a�� 0�� �01� HT45F3830 Ultrasonic Atomizer Flash MCU HT45F3830 Ultrasonic Atomizer Flash MCU IDLE1 Mode TheIDLE1ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterishighandtheFSYSONbitintheCTRLregisterishigh.IntheIDLE1Modethe systemoscillatorwillbeinhibitedfromdrivingtheCPU,thesystemoscillatorwillcontinuetorun, andthissystemoscillatormaybehighspeedorlowspeedsystemoscillator.IntheIDLE1Modethe lowfrequencyclockfSUBwillbeontodrivesomeperipheralfunctions. Note:IfLVDEN=1andtheSLEEPorIDLEmodeisentered,theLVDandbandgapfunctionswill notbedisabled,andthefSUBclockwillbeforcedtobeenabled. Control Registers TheSMODandCTRLregistersareusedtocontroltheinternalclockswithinthedevice. SMOD Register Bit 7 6 5 4 3 2 1 0 Name CKS� CKS1 CKS0 — LTO HTO IDLEN HLCLK R/W R/W R/W R/W — R R R/W R/W POR 1 1 0 — 0 0 1 0 Bit7~5 CKS2 ~ CKS0:ThesystemclockselectionwhenHLCLKis"0" 000:fSUB 001:fSUB 010:fH/64 011:fH/32 100:fH/16 101:fH/8 110:fH/4 111:fH/2 Thesethreebitsareusedtoselectwhichclockisusedasthesystemclocksource.In additiontothesystemclocksource,whichcanbeLIRC,adividedversionofthehigh speedsystemoscillatorcanalsobechosenasthesystemclocksource. Bit4 Unimplemented,readas"0" Bit3 LTO:LIRCSystemOSCSSTreadyflag 0:Notready 1:Ready ThisisthelowspeedsystemoscillatorSSTreadyflagwhichindicateswhenthelow speedsystemoscillatorisstableafterpoweronresetorawake-uphasoccurred.The flagwillchangetoahighlevelafter1~2cycles. Bit2 HTO:HIRCSystemOSCSSTreadyflag 0:Notready 1:Ready ThisisthehighspeedsystemoscillatorSSTreadyflagwhichindicateswhenthehigh speedsystemoscillatorisstableafterawake-uphasoccurred.Thisflagisclearedto "0"byhardwarewhenthedeviceispoweredonandthenchangestoahighlevelafter thehighspeedsystemoscillatorisstable.Thereforethisflagwillalwaysbereadas"1" bytheapplicationprogramafterdevicepower-on.Theflagwillbelowwheninthe SLEEPorIDLE0Modebutafterpoweronresetorawake-uphasoccurred,theflag willchangetoahighlevelafter15~16clockcyclesiftheHIRCoscillatorisused. |
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