HT66F4530 datasheet(117/224 Pages) HOLTEK

117 / 224 page

Rev. 1.00

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Rev. 1.00

117

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HT66F4530/HT66F4540/HT66F4550

A/D Flash MCU with Dual Operational Amplifiers

HT66F4530/HT66F4540/HT66F4550

A/D Flash MCU with Dual Operational Amplifiers

Single Pulse Output Mode

Toselectthismode,bitsPTnM1andPTnM0inthePTMnC1registershouldbesetto10

respectivelyandalsothePTnIO1andPTnIO0bitsshouldbesetto11respectively.TheSinglePulse

OutputMode,asthenamesuggests,willgenerateasingleshotpulseonthePTMnoutputpin.

ThetriggerforthepulseoutputleadingedgeisalowtohightransitionofthePTnONbit,which

canbeimplementedusingtheapplicationprogram.HoweverintheSinglePulseOutputMode,the

PTnONbitcanalsobemadetoautomaticallychangefromlowtohighusingtheexternalPTCKn

pin,whichwillinturninitiatetheSinglePulseoutput.WhenthePTnONbittransitionstoahigh

level,thecounterwillstartrunningandthepulseleadingedgewillbegenerated.ThePTnONbit

shouldremainhighwhenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbe

generatedwhenthePTnONbitisclearedtozero,whichcanbeimplementedusingtheapplication

programorwhenacomparematchoccursfromComparatorA.

HoweveracomparematchfromComparatorAwillalsoautomaticallyclearthePTnONbitandthus

generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrol

thepulsewidth.AcomparematchfromComparatorAwillalsogenerateaPTMninterrupt.The

countercanonlyberesetbacktozerowhenthePTnONbitchangesfromlowtohighwhenthe

counterrestarts.IntheSinglePulseOutputModeCCRPisnotused.ThePTnCCLRbitisnotused

inthisMode.

PTnON �it

S/W Co��and

SET“PTnON

”

o�

PTCKn Pin

T�ansition

PTnON �it

CCRA

T�ailing Edge

S/W Co��and

CLR“PTnON”

o�

CCRA Co�pa�e

Mat�h

PTPn Output Pin

Pulse Width = CCRA Value

CCRA

Leading Edge

Single Pulse Generation (n=0 or 1)

HT66F4530 Datasheet(PDF) 117 Page - Holtek Semiconductor Inc

HT66F4530 Datasheet(HTML) 117 Page - Holtek Semiconductor Inc

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