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HT45F2020 Datasheet(PDF) 29 Page - Holtek Semiconductor Inc

No. de pieza HT45F2020
Descripción Electrónicos  Sound Effect Generator Flash MCU
PDF  85 Pages
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Fabricante Electrónico  HOLTEK [Holtek Semiconductor Inc]
Página de inicio  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F2020 Datasheet(HTML) 29 Page - Holtek Semiconductor Inc

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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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