LCD Controller Selection Guide for Hantronix ... - Hantronix, Inc
LCD Controller Selection Guide for Hantronix ... - Hantronix, Inc
LCD Controller Selection Guide for Hantronix ... - Hantronix, Inc
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Application Note<br />
Crystal ClearandVisibly Superior <strong>LCD</strong>Modules<br />
<strong>LCD</strong><strong>Controller</strong><strong>Selection</strong><strong>Guide</strong><strong>for</strong><br />
<strong>Hantronix</strong>Graphics<strong>LCD</strong>s<br />
General:<br />
Thelarger<strong>Hantronix</strong> displays, such as the320x240and640x480pixelsizes, areshippedwithout<br />
built-incontrollers.This isdonebecausedisplays inthis sizerangearetypically usedwithawide range<br />
ofmicroprocessors and fullsizedcomputers.Thechoiceofcontrollerdepends onwhichtypeorclass of<br />
processoris beingused.Thepossibilities rangefrom asimple8-bit micro-controllertoaPentium PC<br />
drivingthedisplay undertheWindowsoperatingsystem.<br />
This application note will givethedesigneran overview of thecontrollers that areavailableto drive any<br />
ofthe<strong>Hantronix</strong> <strong>LCD</strong>panels that donot havebuilt-in controllers.<br />
Typesofavailableinterfaces:<br />
Embeddedordesktop PC:<br />
Whenan<strong>LCD</strong> panelistobedrivenbyacomputersuchasanembeddedPC oradesktopPC the<strong>LCD</strong><br />
display is usually drivenfromaplug-in videocard, eitherISAorPCI bus.Thesecards arereadily<br />
availableand, withone exceptionaretheprimarydisplay cardinthe computer. Most of thesewill drive<br />
aconventionalCRTmonitorandthe<strong>LCD</strong> panel simultaneously. The<strong>LCD</strong> panel canthenbeusedas<br />
theprimary display <strong>for</strong>thecomputerorinconjunctionwithit.<br />
Intheory the320x240(quarterVGAorQVGA)panelscanbedrivenfrom thesecardsbut the<br />
operatingsystem,usually Windows orDOS,requiresaBIOS (Basic Input OutputSystem)thatis<br />
programmedtocoverthesize of panelused. Very few oftheseareavailable<strong>for</strong>theQVGAsizesoonly<br />
640x480(VGA)sizepanels areusedin this configuration. If aQVGApanelis to bedrivenfrom aPCa<br />
secondary display cardis usuallyusedinadditiontotheprimary display. The secondary displaycard<br />
does notdisplay theoperatingsystemscreens but is insteadprogrammedseparately by thedesigner.<br />
<strong>Hantronix</strong>P/N Resolution Description<br />
HDM160GS16<br />
HDM240GS16<br />
HDM240192<br />
HDM240200<br />
HDM2432<br />
HDM3224 (Allmono)<br />
HDM3224C<br />
HDM4832L<br />
HDM6448 (Allmono)<br />
HDM6448C<br />
160x160<br />
240x160<br />
240x192<br />
240x200<br />
240x320<br />
320x240<br />
320x240<br />
480x320<br />
640x480<br />
640x480<br />
Table#1<strong>Hantronix</strong>part numbers anddescriptions<br />
SingleScan4-bit monochromeSTN<br />
SingleScan4-bit monochromeSTN<br />
SingleScan4-bit monochromeSTN<br />
SingleScan4-bit monochromeSTN<br />
SingleScan4-bit monochromeSTN<br />
SingleScan4-bit monochromeSTN<br />
SingleScan8-bit colorSTN<br />
SingleScan8-bit colorSTN<br />
DualScan4-bit monochromeSTN<br />
DualScan8-bit colorSTN<br />
Page1
Application Note<br />
Crystal ClearandVisibly Superior <strong>LCD</strong>Modules<br />
Anumberof display boardmanufacturersaregivenbelow.Theseare only suggestions andthereare<br />
othermanufacturerswhicharenot listedhere. If youare indoubtas tothesuitability of agiven<br />
controller<strong>for</strong>a<strong>Hantronix</strong> panelyoushouldcontact thevendorof thecontrollerandask them.They will<br />
ask <strong>for</strong>thetypeof panel youareplanningtouse.This in<strong>for</strong>mationis suppliedinTable#1.This<br />
descriptionis enough<strong>for</strong>themtoassess thesuitability of theircontrollerwiththis display.<br />
PC104:<br />
PC104embeddedcomputersarecommonly usedwith<strong>LCD</strong> displays andeitherDOS orWindows<br />
operatingsystems.Allof theconsiderations detailedabovealso<br />
apply tothe PC104environment.<br />
Thefollowingaremakersofplug-inVGA<strong>LCD</strong>controllercards.<br />
?<br />
Thefollowingaremakersofsingleboardcomputers with built-in oradd-on VGA<strong>LCD</strong><br />
controllers.<br />
?<br />
DigitalView -www.digitalview.com-ISA&PCIBus VGAcontrollers<br />
EarthComputerTechnologies -www.flat-panel.com-ISA&PCIBus VGAcontrollers.<br />
AVED Display Technologies -www.aveddisplay.com -ISA&PCI Bus VGAcontrollers.<br />
GounderTechnologies,<strong>Inc</strong>.-www1.math.luc.edu/~rmb/temp/specs.html -ISABus<br />
VGAcontrollers.<br />
AdastraSystems-www.adastra.com -486 &PentiumProcessors<br />
ProtechSystems -www.protech.com.tw-386, 486andPentiumProcessors.<br />
AmproComputers, <strong>Inc</strong>.-www.ampro.com-386, 486andPentium Processor,PC104<br />
Tern,<strong>Inc</strong>.-www.tern.com -386EX Processor, PC104<br />
8or16-bit Micro-<strong>Controller</strong>s:<br />
<strong>LCD</strong> panels usedwithsmall micro-controllers requirethedesignertoimplementthe <strong>LCD</strong> controller<br />
“from scratch”. Table#2comparessomeof theavailablecontrollerICs andtheirsuitability<strong>for</strong>usewith<br />
various <strong>Hantronix</strong> flat panel displays.Twooptions aregiven<strong>for</strong>eachdisplay fromeachvendorwhere<br />
available. Theminimum versionis thelowest pricedcontrollerthat will drivethedisplay.Thefull<br />
featuredcontrollers cost more but provideextra features such as gray scaleonthemonochrome<br />
panels andmany colors onthecolorpanels. They may alsooperateonawiderangeof voltages and<br />
havesleeporlow powermodes.<br />
All oftheecontrollersaredownwardcompatible. Forinstance, acolorcapablecontrollerwill alsodrive<br />
amonochromepanel.This may bedesirableif aproduct needstohandlebothmonochromeandcolor<br />
displays.<br />
Page2
Application Note<br />
Crystal Clear and Visibly Superior<br />
<strong>LCD</strong> Modules<br />
<strong>Hantronix</strong> P/N<br />
HDM160GS16<br />
HDM240GS16<br />
HDM240192<br />
HDM240200<br />
HDM3224 (All mono)<br />
HDM2432 (1/320 duty)<br />
HDM4832L<br />
HDM3224C<br />
HDM6448 (All mono)<br />
<strong>Controller</strong> IC<br />
P/N & Mfr.(Min)<br />
Epson S1D13700<br />
Epson SED1353/<br />
S1D13503<br />
Epson SED1375/<br />
S1D13705<br />
Epson SED1375/<br />
S1D13705<br />
<strong>Controller</strong> IC<br />
P/N & Mfr.(Full)<br />
Epson SED1376/<br />
S1D13706<br />
------------------------<br />
Amulet<br />
AGB64LV01-QC<br />
(GUI <strong>Controller</strong>)<br />
Epson SED1354/<br />
S1D13504<br />
Epson SED1386/<br />
S1D13806<br />
Comments<br />
The controllers in the minimum<br />
(Min) column provide basic<br />
display functions and are the<br />
minimum controller that can be<br />
used. <strong>Controller</strong>s in the Full<br />
column provide extra functions<br />
such as gray scale or more<br />
colors, wider range of VDD<br />
voltages, built-in video RAM, low<br />
power modes, image inversion<br />
and rotation, etc.<br />
HDM6448C<br />
Epson SED1354/<br />
S1D13504<br />
Epson SED1386/<br />
S1D13806<br />
Table #2 <strong>Controller</strong>s <strong>for</strong> 8, 16 & 32-bit Processors<br />
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