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HT45F2020 датащи(PDF) 29 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 29 Page - Holtek Semiconductor Inc |
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29 / 85 page ![]() Rev. 1.00 28 April 11, 2017 Rev. 1.00 29 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU NORMAL Mode to SLOW Mode Switching WhenrunningintheNORMALMode,whichusesthehighspeedsystemoscillator,andtherefore consumesmorepower,thesystemclockcanswitchtorunintheSLOWModebysetthe CKS2~CKS0bitsto“111”intheSCCregister.Thiswillthenusethelowspeedsystemoscillator whichwillconsumelesspower.Usersmaydecidetodothisforcertainoperationswhichdonot requirehighperformanceandcansubsequentlyreducepowerconsumption. TheSLOWModeissourcedfromtheLIRCoscillatorandthereforerequiresthisoscillatortobe stablebeforefullmodeswitchingoccurs. NORMAL Mode SLOW Mode CKS2~CKS0 = 111 SLEEP Mode FHIDEN=0, FSIDEN=0 HALT instruction is executed IDLE0 Mode FHIDEN=0, FSIDEN=1 HALT instruction is executed IDLE1 Mode FHIDEN=1, FSIDEN=1 HALT instruction is executed IDLE2 Mode FHIDEN=1, FSIDEN=0 HALT instruction is executed |
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