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HT45F4M 데이터시트(PDF) 33 Page - Holtek Semiconductor Inc

부품명 HT45F4M
상세설명  Lithium Battery Backup Power ASSP MCU
PDF  138 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F4M 데이터시트(HTML) 33 Page - Holtek Semiconductor Inc

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HT45F4M
Lithium Battery Backup Power ASSP MCU
HT45F4M
Lithium Battery Backup Power ASSP MCU
TB CK
Ti me B as e
HI RC
LI RC
Hi gh Sp ee d
O sci lla ti on
Lo w S pee d
O sci lla ti on
f H
f H /6 4
f H /3 2
f H /1 6
f H /8
f H /4
f H /2
6- st age P re sc al er
f SU B
f SYS
HL CL K,
CK S2 ~C KS 0 bi ts
f TB C
f SYS /4
f TB
WD T
sl eep
To p er ip he ra ls
System Clock Configurations
Note:WhenthesystemclocksourcefSYSisswitchedtofSUBfromfH,thehighspeedoscillationwill
stoptoconservethepower.ThusthereisnofH~fH/64forperipheralcircuittouse.
System Operation Modes
Therearefivedifferentmodesofoperationforthemicrocontroller,eachonewithitsown
specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand
powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe
microcontroller,theNORMALModeandSLOWMode.Theremainingthreemodes,theSLEEP,
IDLE0andIDLE1Mode,areusedwhenthemicrocontrollerCPUisswitchedofftoconservepower.
Operating Mode
Description
CPU
fSYS
fSUB
fTBC
NORMAL mode
On
fH~fH/64
On
On
SLOW mode
On
fSUB
On
On
ILDE0 mode
Off
Off
On
On
IDLE1 mode
Off
On
On
On
SLEEP mode
Off
Off
On
Off



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