HT69F360 datasheet(143/235 Pages) HOLTEK

143 / 235 page

Rev. 1.30

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Rev. 1.30

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HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

Single Pulse Mode

Toselectthismode,bitsPTnM1andPTnM0inthePTMnC1registershouldbesetto10

respectivelyandalsothePTnIO1andPTnIO0bitsshouldbesetto11respectively.TheSinglePulse

OutputMode,asthenamesuggests,willgenerateasingleshotpulseontheTMoutputpin.

ThetriggerforthepulseoutputleadingedgeisalowtohightransitionofthePTnONbit,which

canbeimplementedusingtheapplicationprogram.HoweverintheSinglePulseMode,thePTnON

bitcanalsobemadetoautomaticallychangefromlowtohighusingtheexternalPTCKnpin,

whichwillinturninitiatetheSinglePulseoutput.WhenthePTnONbittransitionstoahighlevel,

thecounterwillstartrunningandthepulseleadingedgewillbegenerated.ThePTnONbitshould

remainhighwhenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbegenerated

whenthePTnONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramor

whenacomparematchoccursfromComparatorA.

HoweveracomparematchfromComparatorAwillalsoautomaticallyclearthePTnONbitandthus

generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrol

thepulsewidth.AcomparematchfromComparatorAwillalsogenerateaTMinterrupt.Thecounter

canonlyberesetbacktozerowhenthePTnONbitchangesfromlowtohighwhenthecounter

restarts.IntheSinglePulseModeCCRPisnotused.ThePTnCCLRbitisnotusedinthisMode.

Leadi ng Ed ge

PT nO N bi t

0 ® 1

S/ W Co mm an d

SET " PT nO N"

PT CK n Pi n Tr an st io n

PT nO N bi t

1 ® 0

S/ W Co mm an d

CL R "P Tn ON "

CCR A Ma tc h C om pa re

Pu ls e Wi dt h = C CRA V al ue

Tr a ili ng E dge

PT Mn O ut put P in

Single Pulse Generation (n=0, 1)

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