HT45F65 datasheet(110/231 Pages) HOLTEK

110 / 231 page

Rev. 1.60

110

�ove��e� �� 01�

Rev. 1.60

111

�ove��e� �� 01�

HT45F65/HT45F66/HT45F67

Glucose Meter 8-Bit Flash MCU

IftheT2CCLRbitintheTM2C1registerishighthenthecounterwillbeclearedwhenacompare

matchoccursfromComparatorA.However,hereonlytheT2AFinterruptrequestflagwillbe

generatedevenifthevalueoftheCCRPbitsislessthanthatoftheCCRAregisters.Thereforewhen

T2CCLRishighnoT2PFinterruptrequestflagwillbegenerated.IntheCompareMatchOutput

Mode,theCCRAcannotbesetto"0".

Asthenameofthemodesuggests,afteracomparisonismade,theTMoutputpin,willchange

state.TheTMoutputpinconditionhoweveronlychangesstatewhenanT2AFinterruptrequest

flagisgeneratedafteracomparematchoccursfromComparatorA.TheT2PFinterruptrequestflag,

generatedfromacomparematchoccursfromComparatorP,willhavenoeffectontheTMoutput

pin.ThewayinwhichtheTMoutputpinchangesstatearedeterminedbytheconditionofthe

T2IO1andT2IO0bitsintheTM2C1register.TheTMoutputpincanbeselectedusingtheT2IO1

andT2IO0bitstogohigh,togolowortotogglefromitspresentconditionwhenacomparematch

occursfromComparatorA.TheinitialconditionoftheTMoutputpin,whichissetupafterthe

T2ONbitchangesfromlowtohigh,issetupusingtheT2OCbit.NotethatiftheT2IO1andT2IO0

bitsarezerothennopinchangewilltakeplace.

CCRA

CCRP

0xFFFFH

Counte�

ove�flow

CCRA Int.

FlagTnAF

CCRP Int.

FlagTnPF

CCRP > 0

Counte� clea�ed �y CCRP value

TM O/P Pin

TnO�

Pause

Counte�

Reset

Output Pin set

to Initial Level

Low if TnOC = 0

Output Toggle

with TnAF flag

He�eTnIO [1:0] = 11

Toggle Output Select

�owTnIO [1:0] = 10

Active High Output

Select

Output not affected �y

TnAF flag. Re�ains High

until �eset �yTnO� �it

TnCCLR = 0; TnM[1:0] = 00

TnPAU

Resu�e

Stop

Ti�e

CCRP > 0

CCRP = 0

TnAPOL

Output Pin

Reset to initial value

Output inve�ts

when TnPOL is high

Output cont�olled

�y othe� pin- sha�ed function

Counte� Value

Compare Match Output Mode – TnCCLR = 0 (n=2)

Note:1.WithTnCCLR=0aComparatorPmatchwillclearthecounter

2.TheTMoutputpiniscontrolledonlybytheTnAFflag

3.TheoutputpinisresettoitsinitialstatebyaTnONbitrisingedge

HT45F65 Datasheet(PDF) 110 Page - Holtek Semiconductor Inc

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