Toshiba T6963C User Manual

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

Toshiba T6963C Specifications

General

Display Type	LCD
Interface	8-bit parallel
Voltage	5V
On-Chip Font ROM	Yes
Graphics Capability	Yes
Type	LCD Controller
Display Technology	LCD
Operating Temperature	-20°C to 70°C
Character Size	5x8

Summary

Introduction to Toshiba T6963C Controller

Toshiba T6963C Controller Functional Description

Schematic Overview of 80C51 Interface

Software Implementation for T6963C

Software Flowchart

Visual representation of the software execution flow for interfacing with the T6963C controller.

Initialization Process

Commands and parameters required to initialize the T6963C LCD controller before data display.

Software Subroutines

Reusable code blocks for tasks like sending commands, data, and checking status.

Tables and Data for Software

Initialization bytes and bitmap graphic data used in the software example.