HT66F4530 datasheet(103/224 Pages) HOLTEK

103 / 224 page

Rev. 1.00

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Rev. 1.00

103

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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,bitsSTnM1andSTnM0intheSTMnC1registershouldbesetto10

respectivelyandalsotheSTnIO1andSTnIO0bitsshouldbesetto11respectively.TheSinglePulse

OutputMode,asthenamesuggests,willgenerateasingleshotpulseontheSTMnoutputpin.

ThetriggerforthepulseoutputleadingedgeisalowtohightransitionoftheSTnONbit,which

canbeimplementedusingtheapplicationprogram.HoweverintheSinglePulseOutputMode,the

STnONbitcanalsobemadetoautomaticallychangefromlowtohighusingtheexternalSTCKn

pin,whichwillinturninitiatetheSinglePulseoutput.WhentheSTnONbittransitionstoahigh

level,thecounterwillstartrunningandthepulseleadingedgewillbegenerated.TheSTnONbit

shouldremainhighwhenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbe

generatedwhentheSTnONbitisclearedtozero,whichcanbeimplementedusingtheapplication

programorwhenacomparematchoccursfromComparatorA.

HoweveracomparematchfromComparatorAwillalsoautomaticallycleartheSTnONbitandthus

generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrol

thepulsewidth.AcomparematchfromComparatorAwillalsogenerateaSTMninterrupt.The

countercanonlyberesetbacktozerowhentheSTnONbitchangesfromlowtohighwhenthe

counterrestarts.IntheSinglePulseOutputModeCCRPisnotused.TheSTnCCLRandSTnDPX

bitsarenotusedinthisMode.

STnON �it

S/W Co��and

SET“STnON”

o�

STCKn Pin

T�ansition

STnON �it

CCRA

T�ailing Edge

S/W Co��and

CLR“STnON”

o�

CCRA Co�pa�e

Mat�h

STPn Output Pin

Pulse Width = CCRA Value

CCRA

Leading Edge

Note:STCKnisnotavailableforHT66F4530.

Single Pulse Generation (n=0 or 1)

HT66F4530 Datasheet(PDF) 103 Page - Holtek Semiconductor Inc

HT66F4530 Datasheet(HTML) 103 Page - Holtek Semiconductor Inc

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