tag:blogger.com,1999:blog-85303534394708154462011-07-08T11:09:32.730-07:00prezentarea proiectului "D32 – calculator cu 4 operaţii, cu afisaj de telefon Nokia 3310"Andreihttp://www.blogger.com/profile/08611199670975555614noreply@blogger.comBlogger21100tag:blogger.com,1999:blog-8530353439470815446.post-54947631219982806352009-05-24T03:17:00.000-07:002009-05-24T03:48:44.585-07:00<br /><p style="text-align: justify">Pentru claritate, am ales sa reprezentam separat modul de conectare al LCD-ului de Nokia 3310 (avand controller-ul <b>PCD8544</b>) si al switch-urilor ce vor avea rol de taste:</p> <br /> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_piurA6KjafM/Shkff5bnbfI/AAAAAAAAAjE/IoFTAXS-QjY/s1600-h/connect-lcd.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://2.bp.blogspot.com/_piurA6KjafM/Shkff5bnbfI/AAAAAAAAAjE/IoFTAXS-QjY/s400/connect-lcd.jpg" alt="" id="BLOGGER_PHOTO_ID_5339333466077490674" border="0" /></a> <p style="text-align: justify"> Conform <a href="http://www.amontec.com/lcd_controller_pcd8544.pdf">foii de catalog pentru controller-ul PCD8544</a>, LCD-ul trebuie alimentat cu o tensiune cuprinsa intre 2.7 si 3.3V. Tensiunile pe ceilalti pini trebuie, de asemenea, sa fie cuprinse intre aceste valori. Avand in vedere ca montajul este alimentat cu 5V si pinii de iesire ai microcontroller-ului au tensiuni intre 0 si 5V, am introdus in circuit divizoare de tensiune formate din rezistoare de 10K si respectiv 15K. <br /><br /> Pinii LCD-ului sunt, deci, conectati la portul B al microcontroller-ului, iar pentru conectarea pinului Vout al LCD-ului am folosit un condensator electrolitic de 4.7uF, aceasta valoare fiind cuprinsa intre limitele descrise <a href="http://www.amontec.com/lcd_nokia_3310.shtml">aici</a>. </p> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_piurA6KjafM/ShkfgNQ1zAI/AAAAAAAAAjM/pYJzigBIrtk/s1600-h/connect-switch.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://1.bp.blogspot.com/_piurA6KjafM/ShkfgNQ1zAI/AAAAAAAAAjM/pYJzigBIrtk/s400/connect-switch.jpg" alt="" id="BLOGGER_PHOTO_ID_5339333471401004034" border="0" /></a> <p style="text-align: justify"> Pentru a evita conectarea celor 16 switch-uri la un singur port cu 8 pini si demultiplexarea lor, am conectat separat cate 8 switch-uri la porturile A si C ale microcontroller-ului. </p><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8530353439470815446-5494763121998280635?l=proiect-2.blogspot.com' alt='' /></div>Andreihttp://www.blogger.com/profile/08611199670975555614noreply@blogger.comtag:blogger.com,1999:blog-8530353439470815446.post-29844231321485800912009-05-21T09:49:00.000-07:002010-07-26T11:13:20.694-07:00Click pe imagini pentru a le mari... <br /> <br /> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_piurA6KjafM/ShWM0kaf_oI/AAAAAAAAAik/pm9jRoXV22g/s1600-h/macheta-fata.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://1.bp.blogspot.com/_piurA6KjafM/ShWM0kaf_oI/AAAAAAAAAik/pm9jRoXV22g/s400/macheta-fata.JPG" alt="" id="BLOGGER_PHOTO_ID_5338327768073502338" border="0" /></a> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_piurA6KjafM/ShWM1LHYF6I/AAAAAAAAAis/El_qDPDzoeI/s1600-h/macheta-spate.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://4.bp.blogspot.com/_piurA6KjafM/ShWM1LHYF6I/AAAAAAAAAis/El_qDPDzoeI/s400/macheta-spate.JPG" alt="" id="BLOGGER_PHOTO_ID_5338327778462275490" border="0" /></a> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_piurA6KjafM/ShWM1ZTFToI/AAAAAAAAAi0/399Gc4sTTgA/s1600-h/lipituri.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 300px; height: 400px;" src="http://2.bp.blogspot.com/_piurA6KjafM/ShWM1ZTFToI/AAAAAAAAAi0/399Gc4sTTgA/s400/lipituri.JPG" alt="" id="BLOGGER_PHOTO_ID_5338327782269472386" border="0" /></a> <a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_piurA6KjafM/ShWM1qM0CwI/AAAAAAAAAi8/CCCBAtcSIFw/s1600-h/mufa-DB9.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://2.bp.blogspot.com/_piurA6KjafM/ShWM1qM0CwI/AAAAAAAAAi8/CCCBAtcSIFw/s400/mufa-DB9.JPG" alt="" id="BLOGGER_PHOTO_ID_5338327786806577922" border="0" /></a> <br /> <p style="text-align: justify"><i><b>Observatie:</b></i> dupa conectarea portului serial si alimentarea machetei s-a verficat existenta unei tensiuni de aproximativ +10V pe pinul 2 si -10V pe pinul 6.</p><p style="text-align: justify">In urma conectarii microcontroller-ului, s-a verificat functionarea corecta a machetei cu software-ul de test...</p><br /> <p style="text-align: center"><object width="320" height="266" class="BLOG_video_class" id="BLOG_video-8b09774f1a61b81a" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="movie" value="http://www.youtube.com/get_player"> <param name="bgcolor" value="#FFFFFF"> <param name="allowfullscreen" value="true"> <param name="flashvars" value="flvurl=http://v3.nonxt8.googlevideo.com/videoplayback?id%3D8b09774f1a61b81a%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330265178%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D29D216D183CE57BE8271FAF2802436E4F3270964.FF94ABDD74A238F37AECF549DC4779DAAD75DA7%26key%3Dck1&amp;iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D8b09774f1a61b81a%26offsetms%3D5000%26itag%3Dw160%26sigh%3DnzmC3coUTJ28AozdgNxJQzJgH6w&amp;autoplay=0&amp;ps=blogger"> <embed src="http://www.youtube.com/get_player" type="application/x-shockwave-flash" width="320" height="266" bgcolor="#FFFFFF" flashvars="flvurl=http://v3.nonxt8.googlevideo.com/videoplayback?id%3D8b09774f1a61b81a%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330265178%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D29D216D183CE57BE8271FAF2802436E4F3270964.FF94ABDD74A238F37AECF549DC4779DAAD75DA7%26key%3Dck1&iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D8b09774f1a61b81a%26offsetms%3D5000%26itag%3Dw160%26sigh%3DnzmC3coUTJ28AozdgNxJQzJgH6w&autoplay=0&ps=blogger" allowFullScreen="true" /></object> <br /> <br /> <fb:like href="http://proiect-2.blogspot.com/2009/05/partea-comuna-placii-de-test.html" show_faces="false" onclick="FB.XFBML.parse(document.getElementById('BLOG_video-8b09774f1a61b81a'));"></fb:like><br /> <br /> <div id="fb-root"></div><script> window.fbAsyncInit = function() { FB.init({appId: 'your app id', status: true, cookie: true, xfbml: true}); 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