HT45F5N datasheet(86/202 Pages) HOLTEK

86 / 202 page

Rev. 1.00

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HT45F5N/HT45FH5N

Power Bank ASSP Flash MCU

HT45F5N/HT45FH5N

Power Bank ASSP Flash MCU

Single Pulse Mode

Toselectthismode,bitsSTM1andSTM0intheSTMC1registershouldbesetto10respectively

andalsotheSTIO1andSTIO0bitsshouldbesetto11respectively.TheSinglePulseOutputMode,

asthenamesuggests,willgenerateasingleshotpulseontheSTMoutputpin.

ThetriggerforthepulseoutputleadingedgeisalowtohightransitionoftheSTONbit,whichcan

beimplementedusingtheapplicationprogram.HoweverintheSinglePulseMode,theSTONbit

canalsobemadetoautomaticallychangefromlowtohighusingtheexternalSTCKpin,whichwill

inturninitiatetheSinglePulseoutput.WhentheSTONbittransitionstoahighlevel,thecounter

willstartrunningandthepulseleadingedgewillbegenerated.TheSTONbitshouldremainhigh

whenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbegeneratedwhenthe

STONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramorwhena

comparematchoccursfromComparatorA.

S/W Co��and

SET“STO�”

o�

STCK Pin

T�ansition

T�ailing Edge

S/W Co��and

CLR“STO�”

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CCRA Co�pa�e

Match

STP Output Pin

Pulse Width = CCRA Value

Leading Edge

STO� �it

Single Pulse Generation

HT45F5N Datasheet(PDF) 86 Page - Holtek Semiconductor Inc