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HT67F488 датащи(PDF) 103 Page - Holtek Semiconductor Inc

номер детали HT67F488
подробное описание детали  TinyPowerTM A/D Flash MCU with LCD & EEPROM
PDF  171 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT67F488 датащи(HTML) 103 Page - Holtek Semiconductor Inc

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Rev. 1.60
103
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HT67F488/HT67F489
TinyPowerTM A/D Flash MCU with LCD & EEPROM
LCD Display Memory
ThedevicesprovideanareaofembeddeddatamemoryforLCDdisplay.Thisareaislocatedfrom
80Hto93HoftheRAMatSector1.TheMemoryPointerMP1HistheswitchbetweentheRAM
andtheLCDdisplaymemory.WhentheMP1H=01H,datawritteninto80H~93Hwillaffectthe
LCDdisplay.WhentheMP1Hiswrittenotherthan01H,anydatawritteninto80H~93Hismeantto
accessthegeneralpurposedatamemory.
TheLCDdisplaymemorycanbereadandwrittentoonlybyindirectaddressingmodeusingMP1L
andMP1H.Whendataiswrittenintothedisplaydataarea,itisautomaticallyreadbytheLCD
driverwhichthengeneratesthecorrespondingLCDdrivingsignals.Toturnthedisplayonoroff,
a“1”ora“0”iswrittentothecorrespondingbitofthedisplaymemory,respectively.Thefigure
illustratesthemappingbetweenthedisplaymemoryandLCDpatternforthedevice.
�7
�6
�5
�4
�3
��
�1
�0
SEG0
SEG1
SEG�
180H
181H
SEG17
SEG18
SEG19
19�H
193H
COM7 COM6 COM5 COM4 COM3 COM� COM1 COM0
LCD Driver Output
TheoutputnumberofthedeviceLCDdrivercanbe20×4or20×8.TheLCDdriveris“R”typeonly.
TheLCDclocksourceisfromfSUB,whichcanbeeithertheLXTorLIRCoscillator.



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