Toshiba T6963C User Manual Page 1

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ApplicationNote
InterfacingtoaGraphicsModulewithaToshiba
T6963CController
Page1
Introduction:
FunctionalDescription:
Schematic:
TheToshibaT6963CLCDcontrollerisoneofthemostpopularcontrollersforuseinsmallgraphics
displays.ForthisreasonitisusedinanumberofLCDmodulesfrom128x128to 240x128 pixels.
Thisclassofmoduleismostcommonlyusedtodisplayamixtureoftextand graphics in samall
devicesandinstruments.Itisusuallyinterfaceddirectlywithanembedded8-bit microprocessor.
Thisapplicationnotedescribestheuseofthiscontrollerwithanumberof graphics modules.
Theexampleusedhereisbasedonan8-bitIntelI8051microcontroller but applies to almost any
micro-controller.
TheT6963Cusesasimple8-bitdatabustotransferallinstructionsanddatatoandfromthe
display.Afterpowerisappliedahardwareresetisissued.Thecontrollermustthenbeinitialized
withaseriesofcommandstosetupthevariousmodesandoptionsavailabletotheuser.Once
initializedthedisplayisreadytoacceptthedatatobedisplayed.Thisdatacanbeintheformof
bit-mappedgraphicaldataortextdatainpseudoASCIIformat.Theinternalcharactergeneratoris
biasedat-20h.whichmeanstheusermustsubtract20hfromtheASCIIcodebeforesendingitto
thedisplay.
Inthebit-mappedmodeeachbyteofdatarepresents8pixelsonthedisplay.SeeFigure#1.Text
datacanbewritteninpseudoASCIIformatandwillbedisplayedasa5x7dotcharacter.The
graphicalandtextdataarewrittentoseparate,userassigned,areas,orpages,inthedisplayRAM
withinthedisplaymodule.Theusercanthenchooseoneofthreewaystomixthetextand
graphicspagesonthedisplayorthetextorgraphicspagecanbedisplayedalone.
The80C51microprocessorisconnectedtotheLCDcontrollerchipviaparallelI/Oportsinthis
example.Itcouldalsobeconnectedtotheprocessor'sdatabusandbemappedintothe
processor'sdatamemoryarea.Seefigure2.
D0
D1
D2
D3 D4 D5
D6
D7 D0 D1
1BYTE
ST
17BYTE
TH
2BYTE
ND
Figure#1Memorymapofa128x128display
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Summary of Contents

Page 1 - T6963CController

ApplicationNoteInterfacingtoaGraphicsModulewithaToshibaT6963CControllerPage1Introduction:FunctionalDescription:Schematic:TheToshibaT6963CLCDcontroller

Page 2 - ApplicationNote

ApplicationNotePage2+5v-15VVSSFGVLVDD33pF33pF16.00mHzRST1N4148+5v1uF10k+X1X280C51P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P3.0P3.1P3.2P3.3D0D4D1D5D2D6D3D7WRRDC

Page 3

ApplicationNotePage3SoftwareFlowchart:MSGC:SENDACOMMANDWITHPARAMETERSSETCOUNTERTO2GETBYTEFROMTABLECALLWRITEDINC.TABLEPOINTERDECREMENTCOUNTERGETCOMM.FR

Page 4

ApplicationNotePage4Initializationbytes:COMMAND CODE PARAMETERS* FUNCTIONTEXTHOMEADDRESS 40h 80h,07hSTARTOFTHETEXTSTORAGEAREAINDISPLAYRAM0780h1eh,00h1

Page 5

ApplicationNotePage5$mod51;**************************************************;**;*T6963ApplicationNoteV1.0*;**;***************************************

Page 6

ApplicationNotePage6;************************************************;TABLESANDDATA;Initializationbytesfor240x64msgi1:db80h,07h,40h;texthomeaddressdb1

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