HT45F4N datasheet(43/170 Pages) HOLTEK

43 / 170 page

Rev. 1.30

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Rev. 1.30

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HT45F4N/HT45FH4N

Power Bank Flash MCU

HT45F4N/HT45FH4N

Power Bank Flash MCU

TB CK

Ti me B as e

HI RC

LI RC

Hi gh S peed

Os ci ll at io n

Lo w Sp ee d

Os ci ll at io n

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 Pr e sca le r

f L

f SYS

HL CL K,

CK S2 ~C KS 0 bi ts

f TB C

f SYS /4

f TB

WD T

f S

System Clock Configurations

Note:WhenthesystemclocksourcefSYSisswitchedtofLfromfH,thehighspeedoscillationwillstoptoconserve

thepower.ThusthereisnofH~fH/64forperipheralcircuittouse.

System Operation Modes

Therearefivedifferentmodesofoperationforthemicrocontroller,eachonewithitsown

specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand

powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe

microcontroller,theNORMALModeandSLOWMode.Theremainingthreemodes,theSLEEP,

IDLE0andIDLE1ModeareusedwhenthemicrocontrollerCPUisswitchedofftoconservepower.

Operating

Mode

Description

CPU

fSYS

fTBC

NORMAL �ode

fH~fH/��

SLOW �ode

ILDE0 �ode

Off

IDLE1 �ode

Off

SLEEP �ode

Off

HT45F4N Datasheet(PDF) 43 Page - Holtek Semiconductor Inc

HT45F4N Datasheet(HTML) 43 Page - Holtek Semiconductor Inc

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