Giáo trình Kỹ thuật vi điều khiển - Chương 2: Thiết kế Kit vi điều khiển

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

Ch−¬ngꢀIIꢀ

ThiÕtꢀkÕꢀKITꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

ꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ–Béꢀm«nꢀT§Hꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ29

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

Ch−¬ngꢀIIꢀ

ThiÕtꢀkÕꢀKITꢀviꢀ®iÒuꢀkhiÓnꢀ

2.1ꢀChänꢀph−¬ngꢀ¸nꢀthiÕtꢀkÕꢀ

Häꢀviꢀ®iÒuꢀkhiÓnꢀmꢁꢀbéꢀKITꢀchänꢀlꢁmꢀthꢁnhꢀphÇnꢀtrungꢀt©mꢀlꢁꢀhäꢀ8051,ꢀv×ꢀnh÷ngꢀ

lÝꢀdoꢀsauꢀ®©y:ꢀ

ꢀꢀ

+ꢀHäꢀ8051ꢀlꢁꢀhäꢀviꢀ®iÒuꢀkhiÓnꢀphæꢀbiÕnꢀnhÊtꢀhiÖnꢀnay,ꢀ®−îcꢀsöꢀdôngꢀrÊtꢀ

réngꢀrꢂiꢀtrongꢀc¸cꢀøngꢀdôngꢀc«ngꢀnghiÖpꢀcòngꢀnh−ꢀtrongꢀviÖcꢀchÕꢀt¹oꢀc¸cꢀs¶nꢀphÈmꢀd©nꢀ

dông.ꢀꢀ

ꢀꢀ

+ꢀHäꢀ8051ꢀ®ꢂꢀvꢁꢀ®angꢀlꢁꢀm«nꢀhäcꢀ®−îcꢀn»mꢀtrongꢀch−¬ngꢀtr×nhꢀ®ꢁoꢀt¹oꢀ

cñaꢀc¸cꢀtr−êngꢀtrungꢀhäc,ꢀcaoꢀ®¼ngꢀvꢁꢀ®¹iꢀhäcꢀtrongꢀc¶ꢀn−íc,ꢀ®©yꢀcßnꢀlꢁꢀmétꢀ®èiꢀt−îngꢀ

côꢀthÓꢀchoꢀsinhꢀviªnꢀkhiꢀb¾tꢀ®ÇuꢀnhËpꢀm«nꢀviꢀ®iÒuꢀkhiÓn.ꢀV×ꢀvËy,ꢀviÖcꢀchänꢀhäꢀ8051ꢀ

lꢁmꢀthꢁnhꢀphÇnꢀtrungꢀt©mꢀcñaꢀbéꢀKITꢀlꢁꢀphïꢀhîpꢀvíiꢀch−¬ngꢀtr×nhꢀ®ꢁoꢀt¹oꢀvꢁꢀ®iÒuꢀkiÖnꢀ

häcꢀtËpꢀcñaꢀsinhꢀviªn.ꢀ

V×ꢀnh÷ngꢀlÝꢀdoꢀtrªn,ꢀvꢁꢀxuÊtꢀph¸tꢀtõꢀmôcꢀ®Ých,ꢀyªuꢀcÇuꢀcñaꢀ®åꢀ¸nꢀlꢁꢀthiÕtꢀkÕꢀmétꢀ

béꢀ KITꢀ viꢀ®iÒuꢀkhiÓnꢀ phôcꢀvôꢀ môcꢀ®Ýchꢀ®ꢁoꢀ t¹oꢀm«nꢀhäcꢀnꢁy,ꢀ taꢀ quyÕtꢀ®Þnhꢀ chänꢀ

ph−¬ngꢀ¸nꢀsöꢀdôngꢀchipꢀviꢀ®iÒuꢀkhiÓnꢀ89C52ꢀcñaꢀhꢂngꢀATMELꢀ®ÓꢀlꢁmꢀthꢁnhꢀphÇnꢀ

trungꢀt©mꢀcñaꢀKIT,ꢀcïngꢀvíiꢀc¸cꢀthꢁnhꢀphÇnꢀbéꢀnhíꢀROM,ꢀRAMꢀbªnꢀngoꢁiꢀvꢁꢀc¸cꢀthiÕtꢀ

bÞꢀngo¹iꢀviꢀphongꢀphó.ꢀꢀ

Chipꢀviꢀ®iÒuꢀkhiÓnꢀAT89C52ꢀlꢁꢀmétꢀbéꢀviꢀ®iÒuꢀkhiÓnꢀcòngꢀthuécꢀhäꢀ8051,ꢀdoꢀ®ãꢀ

nãꢀcãꢀtÊtꢀc¶ꢀnh÷ngꢀ®Æcꢀtr−ngꢀc¬ꢀb¶nꢀcñaꢀhäꢀnꢁy.ꢀNgoꢁiꢀraꢀnãꢀcßnꢀcãꢀthªmꢀ1ꢀbéꢀ®Þnhꢀ

thêiꢀTimerꢀ2ꢀvꢁꢀ3ꢀnguånꢀng¾tꢀsoꢀvíiꢀ8051.ꢀ

72.2ꢀX©yꢀdùngꢀs¬ꢀ®åꢀkhèiꢀcñaꢀKITꢀ

Sauꢀ®©yꢀtaꢀsÏꢀx©yꢀdùngꢀs¬ꢀ®åꢀkhèiꢀcñaꢀbéꢀKITꢀviꢀ®iÒuꢀkhiÓnꢀnh−ꢀsau:ꢀ

ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ30

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

LCD

PC

CPU

bµN PHÝM

§ÇU VµO

XUNG

stepper

motor

VµO/RA

DIGITAL

LED

A/D

D/A

LED

7

MATRIX

8

xꢀ8

THANH

ꢀ

H×nhꢀ2.1ꢀꢁꢀS¬ꢀ®åꢀkhèiꢀcñaꢀKITꢀ

ꢀ

Trongꢀs¬ꢀ®åꢀkhèiꢀcñaꢀbéꢀKITꢀnh−ꢀtrªn,ꢀchøcꢀn¨ngꢀcñaꢀc¸cꢀkhèiꢀnh−ꢀsauꢀ

- KhèiꢀCPUꢀ:ꢀ§©yꢀlꢁꢀkhèiꢀtrungꢀt©mꢀcñaꢀhÖꢀthèng.ꢀNãꢀbaoꢀgåmꢀchipꢀviꢀ®iÒuꢀ

khiÓnꢀAT89C52,ꢀEEPROM,ꢀRAM,ꢀc¸cꢀcængꢀgiaoꢀtiÕpꢀmëꢀréng,ꢀm¹chꢀchèt,ꢀgi¶iꢀmꢂꢀ®Þaꢀ

chØ...ꢀKhèiꢀnꢁyꢀlꢁmꢀnhiÖmꢀꢀvôꢀtrungꢀt©mꢀ®iÒuꢀhꢁnhꢀho¹tꢀ®éngꢀcñaꢀc¶ꢀbéꢀKIT.ꢀ

- KhèiꢀPCꢀ:ꢀ§©yꢀlꢁꢀkhèiꢀgiaoꢀtiÕpꢀgi÷aꢀhÖꢀviꢀ®iÒuꢀkhiÓnꢀcñaꢀbéꢀKITꢀvꢁꢀm¸yꢀ

tÝnh.ꢀPCꢀgiópꢀchoꢀng−êiꢀsöꢀdôngꢀcãꢀthÓꢀph¸tꢀtriÓnꢀc¸cꢀøngꢀdôngꢀtrªnꢀbéꢀKITꢀtõꢀm¸yꢀ

tÝnh.ꢀNg−êiꢀsöꢀdôngꢀdïngꢀPCꢀ®Óꢀn¹pꢀc¸cꢀch−¬ngꢀtr×nhꢀøngꢀdôngꢀchoꢀbéꢀKIT.ꢀNgoꢁiꢀraꢀ

PCꢀcßnꢀchoꢀphÐpꢀng−êiꢀsöꢀdôngꢀn¹pꢀc¸cꢀch−¬ngꢀtr×nhꢀ®iÒuꢀhꢁnhꢀcñaꢀng−êiꢀsöꢀdôngꢀviÕtꢀ

choꢀbéꢀKITꢀhoÆcꢀthayꢀ®æiꢀch−¬ngꢀtr×nhꢀ®iÒuꢀhꢁnhꢀhiÖnꢀ®angꢀcãꢀtrongꢀbéꢀKIT.ꢀCh−¬ngꢀ

tr×nhꢀ®iÒuꢀhꢁnhꢀph¶iꢀ®−îcꢀn¹pꢀtõꢀc¸cꢀm¹chꢀn¹pꢀngoꢁiꢀvꢁꢀcèꢀ®ÞnhꢀtrªnꢀKIT.ꢀCh−¬ngꢀ

tr×nhꢀøngꢀdôngꢀcñaꢀng−êiꢀsöꢀdôngꢀ®−îcꢀn¹pꢀchoꢀbéꢀKITꢀtõꢀm¸yꢀtÝnhꢀth«ngꢀquaꢀphÇnꢀ

mÒmꢀn¹pꢀ®iꢀkÌmꢀtheoꢀKIT.ꢀꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ31

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

- BꢁnꢀphÝm:ꢀ§©yꢀlꢁꢀkhèiꢀthiÕtꢀbÞꢀ®ÇuꢀvꢁoꢀgiaoꢀtiÕpꢀgi÷aꢀviꢀ®iÒuꢀkhiÓnꢀvꢁꢀng−êiꢀ

söꢀdông.ꢀBꢁnꢀphÝmꢀchoꢀphÐpꢀng−êiꢀsöꢀdôngꢀsöꢀdôngꢀnãꢀ®Óꢀ®iÒuꢀkhiÓnꢀho¹tꢀ®éngꢀcñaꢀ

KITꢀtheoꢀh−íngꢀdÉnꢀtrªnꢀmꢁnꢀh×nhꢀLCDꢀnh−:ꢀ

Ch¹yꢀch−¬ngꢀtr×nhꢀtõngꢀb−ícꢀ(nótꢀSTEP)ꢀ

Xem,ꢀsöaꢀ®æiꢀc¸cꢀthanhꢀghiꢀ(R0ꢃR7),ꢀc¸cꢀthanhꢀghiꢀ®ÆcꢀbiÖtꢀ(SFR),ꢀc¸cꢀ

PORTꢀ(P0,P1,P2,ꢀP3),ꢀc¸cꢀ«ꢀnhíꢀRAMꢀ...ꢀ

ChuyÓnꢀ®æiꢀquaꢀl¹iꢀgi÷aꢀc¸cꢀkiÓuꢀhiÓnꢀthÞꢀd÷ꢀliÖuꢀnh−ꢀnhÞꢀph©n,ꢀhexaꢀhayꢀ

thËpꢀph©n.ꢀ

- KhèiꢀLCD:ꢀmꢁnꢀh×nhꢀtinhꢀthÓꢀlángꢀvíiꢀkÝchꢀth−ícꢀlínꢀ24x8ꢀkÝꢀtùꢀgiópꢀtaꢀcãꢀthÓꢀ

quanꢀs¸tꢀdÔꢀdꢁngꢀgi¸ꢀtrÞꢀcñaꢀc¸cꢀthanhꢀghiꢀ(R0ꢃR7),ꢀc¸cꢀthanhꢀghiꢀ®ÆcꢀbiÖtꢀ(SFR)ꢀc¸cꢀ

PORTꢀ(P0,P1,P2,ꢀP3),ꢀc¸cꢀ«ꢀnhíꢀtrongꢀRAMꢀ...ꢀNgoꢁiꢀraꢀtrªnꢀmꢁnꢀh×nhꢀcßnꢀcãꢀc¸cꢀ

h−íngꢀdÉnꢀng−êiꢀsöꢀdông,ꢀchøcꢀn¨ngꢀcñaꢀc¸cꢀphÝmꢀtïyꢀtheoꢀng÷ꢀc¶nh.ꢀLCDꢀt¹oꢀraꢀsùꢀ

tiÖnꢀlîi,ꢀth©nꢀthiÖnꢀchoꢀng−êiꢀsöꢀdôngꢀtrongꢀlꢁmꢀquenꢀcòngꢀnh−ꢀthÝꢀnghiÖmꢀtrªnꢀKIT.ꢀ

- KhèiꢀA/Dꢀ:ꢀCãꢀchøcꢀn¨ngꢀchuyÓnꢀ®æiꢀtÝnꢀhiÖuꢀ®iÖnꢀ¸pꢀt−¬ngꢀtùꢀꢀ0ꢀ–ꢀ5Vꢀthꢁnhꢀ

tÝnꢀhiÖuꢀsèꢀ8ꢀbitꢀ®Óꢀ®−aꢀvꢁoꢀviꢀ®iÒuꢀkhiÓnꢀxöꢀlÝ.ꢀTÝnꢀhiÖuꢀvꢁoꢀ0ꢃ5VꢀcãꢀthÓꢀ®−îcꢀ®−aꢀtõꢀ

bªnꢀngoꢁiꢀhoÆcꢀth«ngꢀquaꢀDIPꢃSWITCHꢀ(DualꢀInlineꢀPakageꢀꢃꢀSWITCH)ꢀ®Óꢀnèiꢀc¸cꢀtÝnꢀ

hiÖuꢀt−¬ngꢀtùꢀcãꢀs½nꢀtrªnꢀkitꢀnhêꢀbéꢀchiaꢀ¸pꢀlꢁꢀ3ꢀbiÕnꢀtrëꢀviꢀchØnhꢀvꢁꢀ®ÆcꢀbiÖtꢀlꢁꢀ®Çuꢀraꢀ

cñaꢀ1ꢀbéꢀc¶mꢀbiÕnꢀnhiÖtꢀ®éꢀLM35,ꢀcãꢀthÓꢀtiÕnꢀhꢁnhꢀëꢀ®©yꢀmétꢀbꢁiꢀthÝꢀnghiÖmꢀvÒꢀ®oꢀ

nhiÖtꢀ®éꢀphßng.ꢀ

- KhèiꢀD/Aꢀ:ꢀLꢁꢀkhèiꢀchoꢀphÐpꢀchuyÓnꢀ®æiꢀtÝnꢀhiÖuꢀsèꢀ8ꢀbitꢀthꢁnhꢀtÝnꢀhiÖuꢀt−¬ngꢀ

tùꢀ0ꢀ–ꢀ10Vꢀ®−aꢀraꢀngoꢁi,ꢀcãꢀthÓꢀhiÓnꢀthÞꢀ®−îcꢀtrªnꢀm¸yꢀhiÖnꢀsãng.ꢀ

- Khèiꢀvꢁo/raꢀxungꢀsèꢀꢂꢀ®iÒuꢀkhiÓnꢀ®éngꢀc¬ꢀb−ícꢀvꢁꢀ®éngꢀc¬ꢀ1ꢀchiÒu:ꢀꢀ

Lꢁꢀkhèiꢀvꢁo/raꢀtÝnꢀhiÖuꢀsè,ꢀchoꢀphÐpꢀbéꢀKITꢀnhËnꢀvꢁoꢀmétꢀtÝnꢀhiÖuꢀsèꢀ8ꢀbit,ꢀ4ꢀtÝnꢀ

hiÖuꢀvꢁoꢀd¹ngꢀxungꢀb»ngꢀc¸cꢀnótꢀÊn,ꢀ4ꢀtÝnꢀhiÖuꢀvꢁoꢀd¹ngꢀxungꢀtõꢀbªnꢀngoꢁiꢀnh−ꢀc¸cꢀbéꢀ

encoder,ꢀngoꢁiꢀraꢀcßnꢀcãꢀ6ꢀ®Çuꢀraꢀxung,ꢀcãꢀ®ÖmꢀtÇngꢀkhuyÕchꢀ®¹iꢀ®Óꢀ®iÒuꢀkhiÓnꢀ®éngꢀ

c¬ꢀb−ícꢀvꢁꢀ®éngꢀc¬ꢀ1ꢀchiÒu.ꢀNgoꢁiꢀraꢀng−êiꢀsöꢀdôngꢀcãꢀthÓꢀsöꢀlùaꢀchänꢀlo¹iꢀ®iÖnꢀ5Vꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ32

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

hoÆcꢀ12Vꢀtïyꢀtheoꢀlo¹iꢀ®éngꢀc¬ꢀb»ngꢀc«ngꢀt¾cꢀthayꢀ®æiꢀnguånꢀcÊpꢀchoꢀ®éngꢀc¬ꢀtrªnꢀ

m¹ch.ꢀ

- LEDꢀ7ꢀthanhꢀ:ꢀLꢁꢀkhèiꢀhiÓnꢀthÞꢀLEDꢀ7ꢀthanh,ꢀcãꢀthÓꢀdïngꢀ®ÓꢀhiÓnꢀthÞꢀc¸cꢀgi¸ꢀ

trÞꢀtheoꢀch−¬ngꢀtr×nhꢀcñaꢀng−êiꢀsöꢀdông.ꢀ

- KhèiꢀLEDꢀMatrixꢀ(8x8)ꢀ:ꢀLꢁꢀmétꢀmaꢀtrËnꢀ®ÌnꢀLEDꢀgåmꢀ8ꢀhꢁngꢀxꢀ8ꢀcét,ꢀt¹iꢀ

mçiꢀ®iÓmꢀcñaꢀmaꢀtrËnꢀLEDꢀcãꢀ2ꢀ®Ìnꢀvíiꢀ2ꢀmꢁuꢀxanhꢀvꢁꢀ®á,ꢀnÕuꢀ®iÒuꢀkhiÓnꢀchoꢀs¸ngꢀ

cïngꢀlócꢀc¶ꢀ2ꢀ®Ìnꢀth×ꢀtaꢀsÏꢀ®−îcꢀmꢁuꢀcam.ꢀ

2.3ꢀChänꢀthiÕtꢀbÞ,ꢀgi¶iꢀmꢁꢀvꢂꢀthiÕtꢀkÕꢀm¹chꢀnguyªnꢀlýꢀcñaꢀhÖꢀthèng:ꢀ

2.3.1.ꢀChänꢀdungꢀl−îngꢀbéꢀnhíꢀvꢂꢀthiÕtꢀbÞꢀngo¹iꢀvi:ꢀ

Taꢀchänꢀc¸cꢀthꢁnhꢀphÇnꢀcñaꢀbéꢀnhíꢀtrªnꢀKITꢀbaoꢀgåm:ꢀ

- 8Kꢃbyteꢀparallelꢀ(songꢀsong)ꢀEEPROMꢀ–ꢀchipꢀsöꢀdôngꢀAT28C64.ꢀ

- 32KꢃbyteꢀRAMꢀngoꢁiꢀ–ꢀchipꢀsöꢀdôngꢀHM62256.ꢀ

- 5ꢀchipꢀ8255ꢀmëꢀréngꢀI/Oꢀ®ÓꢀgiaoꢀtiÕpꢀvíiꢀc¸cꢀthiÕtꢀbÞꢀsau:ꢀ

LCDꢀ–ꢀ24x8ꢀkýꢀtùꢀ

BꢁnꢀphÝmꢀ5x4ꢀ

8ꢀLEDꢀ®¬nꢀ

4ꢀLEDꢀ7ꢀ®o¹nꢀ

LEDꢀmaꢀtrËnꢀ2ꢀmꢁuꢀ8x8ꢀ

C¸cꢀbéꢀchuyÓnꢀ®æiꢀADC,ꢀDACꢀ

Vꢁoꢀ raꢀ xungꢀ sè,ꢀ c¸cꢀ tÇngꢀkhuyÕchꢀ ®¹iꢀ ®Ömꢀ ®Óꢀ ®iÒuꢀ khiÓnꢀ®éngꢀ c¬ꢀ

b−íc,ꢀ®éngꢀc¬ꢀ1ꢀchiÒu.ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ33

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

2.3.2.ꢀGi¶iꢀmꢁꢀ®ÞaꢀchØ:ꢀ

Taꢀs¾pꢀxÕp béꢀnhíꢀvꢁꢀ®ÞaꢀchØꢀcñaꢀc¸cꢀthiÕtꢀbÞꢀngo¹iꢀviꢀgiaoꢀtiÕpꢀvíiꢀKITꢀtrongꢀ

b¶ngꢀ2.1ꢀnh−ꢀsauꢀꢀ

§ÞaꢀchØꢀ

ThiÕtꢀbÞꢀ

EEPROMꢀ

RAMꢀ

Ghiꢀchóꢀ

0000hꢀꢃꢀ1FFFhꢀ

4000hꢀꢃꢀ7FFFhꢀ

Chøaꢀch−¬ngꢀtr×nhꢀMonitorꢀ

Chøaꢀch−¬ngꢀtr×nhꢀøngꢀdôngꢀ

8000hꢀꢃꢀPortAꢀ:ꢀ§iÒuꢀkhiÓnꢀLCD.ꢀ

8001hꢀꢃꢀPortBꢀ:ꢀDataꢀbusꢀcñaꢀLCD.ꢀ

8002hꢀꢃꢀPortCꢀ:ꢀNhËnꢀmꢂꢀcñaꢀbꢁnꢀphÝm.ꢀ

8003hꢀꢃꢀCWꢀꢀꢀꢀ:ꢀThanhꢀghiꢀ®iÒuꢀkhiÓn.ꢀ

8000hꢀꢃꢀ8003hꢀ 8255ꢀ(1)ꢀ

8004hꢀꢁꢀPortA:ꢀ§iÒuꢀkhiÓnꢀcÊpꢀnguånꢀchoꢀc¸cꢀAnotꢀ

ꢀ chungꢀcñaꢀLEDꢀmatrixꢀ(c¸cꢀhꢁng).ꢀ

8005hꢀꢃꢀPortB:ꢀ§iÒuꢀkhiÓnꢀ®ÌnꢀmꢁuꢀxanhꢀcñaꢀLEDꢀ

8255ꢀ(5)ꢀ ꢀ

matrixꢀ(c¸cꢀcétꢀxanh).ꢀ

8006hꢀ ꢃꢀ PortC:ꢀ §iÒuꢀ khiÓnꢀ ®Ìnꢀ mꢁuꢀ ®áꢀ cñaꢀ LEDꢀ

8004hꢀꢃꢀ8007hꢀ

ꢀ matrixꢀ(c¸cꢀcétꢀ®á).ꢀ

8007hꢀꢁꢀCW:ꢀThanhꢀghiꢀ®iÒuꢀkhiÓn.ꢀ

8008hꢀꢃꢀPortAꢀ:ꢀ§−êngꢀDataꢀcñaꢀADC0809.ꢀ

8009hꢀꢃꢀPortBꢀ:ꢀ§−êngꢀDataꢀcñaꢀDAC0808.ꢀ

800AhꢀꢃꢀPortCꢀ:ꢀ§iÒuꢀkhiÓnꢀADC0809.ꢀ

800BhꢀꢃꢀCWꢀꢀꢀꢀ:ꢀThanhꢀghiꢀ®iÒuꢀkhiÓn.ꢀ

8008hꢀꢃꢀ800Bhꢀ 8255ꢀ(2)ꢀ

800ChꢀꢃꢀPortAꢀ:ꢀ§ÇuꢀvꢁoꢀDigital.ꢀ

800DhꢀꢃꢀPortBꢀ:ꢀ§iÒuꢀkhiÓnꢀ®éngꢀc¬ꢀb−íc(PB0ꢂPB3)ꢀ

ꢀ vꢁꢀ®éngꢀc¬ꢀmétꢀchiÒuꢀ(PB4ꢀꢂꢀPB5).ꢀ

800Chꢀꢃꢀ800Fhꢀ 8255ꢀ(3)ꢀ 800Ehꢀ ꢃꢀ PortCꢀ :ꢀ 4ꢀ ®Çuꢀ vꢁoꢀ xungꢀ d¹ngꢀ nótꢀ Ênꢀꢀ

ꢀ

(PC4ꢂPC7),ꢀ4ꢀ®Çuꢀvꢁoꢀchoꢀc¸cꢀthiÕtꢀbÞꢀngoꢁiꢀ

nh−ꢀencoderꢀ(PC0ꢀꢂꢀPC3).ꢀ

800FhꢀꢃꢀCWꢀꢀꢀꢀ:ꢀThanhꢀghiꢀ®iÒuꢀkhiÓn.ꢀ

C000hꢀꢃꢀPortAꢀ:ꢀHiÓnꢀthÞꢀ8ꢀLEDꢀ®¬n.ꢀ

C001hꢀꢃꢀPortBꢀ:ꢀHiÓnꢀthÞꢀ2ꢀLEDꢀ7ꢀthanhꢀ(tr¸i).ꢀ

C002hꢀꢃꢀPortCꢀ:ꢀHiÓnꢀthÞꢀ2ꢀLEDꢀ7ꢀthanhꢀ(ph¶i).ꢀ

C003hꢀꢃꢀCWꢀꢀꢀꢀ:ꢀThanhꢀghiꢀ®iÒuꢀkhiÓn.ꢀ

8255ꢀ(4)ꢀ

C000hꢀꢃꢀC003hꢀ

8255ꢃEXꢀ BUSꢀmëꢀréngꢀdùꢀtr÷,ꢀcãꢀthÓꢀg¾nꢀthªmꢀ1ꢀmoduleꢀkh¸cꢀ

C004hꢀ–ꢀC007hꢀ

ꢀ

B¶ngꢀ2.1ꢀS¾pꢀxÕpꢀbéꢀnhíꢀvꢁꢀc¸chꢀph©nꢀ®ÞaꢀchØꢀchoꢀc¸cꢀthiÕtꢀbÞꢀngo¹iꢀviꢀcñaꢀKITꢀ

ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ34

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

Dùaꢀvꢁoꢀb¶ngꢀ2.1ꢀtrªnꢀtaꢀcãꢀs¬ꢀ®åꢀbéꢀnhíꢀcôꢀthÓꢀnh−ꢀb¶ngꢀ2.2ꢀsau:ꢀ

Addressꢀ 15ꢀ 14ꢀ 13ꢀ 12ꢀ 11ꢀ 10ꢀ 9ꢀ 8ꢀ 7ꢀ 6ꢀ 5ꢀ 4ꢀ 3ꢀ 2ꢀ 1ꢀ 0ꢀ

0000hꢀ

EEPROMꢀꢀꢀ

AT28C64ꢀꢃꢀ

8Kbyteꢀ

0ꢀ 0ꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

1FFFhꢀ

ꢀ

4000hꢀ

0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ

0ꢀ 1ꢀ

0ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

ꢀꢀ

RAMꢀꢀꢀꢀꢀꢀꢀ

HM62256ꢀꢃꢀ

32Kbyteꢀ

7FFFhꢀ

ꢀ

0ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 0ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 0ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 0ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 0ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

1ꢀ 1ꢀ

1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

ꢀꢀ

8000hꢀ

8001hꢀ

8002hꢀ

8003hꢀ

ꢀ

0ꢀ 0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 1ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 1ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 1ꢀ 1ꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

8255ꢃ1ꢀ

KEYPADꢀ

LCDꢀ

ꢀꢀ

8004hꢀ

8005hꢀ

8006hꢀ

8007hꢀ

ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

8255ꢃ5ꢀ

MATRIXꢀꢀ

LEDꢀ

ꢀꢀ

8008hꢀ

8009hꢀ

800Ahꢀ

800Bhꢀ

ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

8255ꢃ2ꢀ

ADCꢀ

DACꢀ

ꢀꢀ

800Chꢀ

800Dhꢀ

800Ehꢀ

800Fhꢀ

ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

8255ꢃ3ꢀ

XUNG Sè

STEPPERꢀ

DCꢀMOTOR

ꢀ

ꢀꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

C000hꢀ

C001hꢀ

C002hꢀ

C003hꢀ

ꢀ

0ꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ ꢀꢀ

0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ 0ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

ꢀꢀ ꢀꢀ

8255ꢃ4ꢀ

LEDꢀ7ꢀꢀ

®o¹n

LED ®¬Nꢀ

ꢀꢀ

C004hꢀ

C005hꢀ

C006hꢀ

C007hꢀ

1ꢀ

0ꢀ 0ꢀ

0ꢀ 1ꢀ

1ꢀ 0ꢀ

1ꢀ 1ꢀ

8255ꢃEXꢀ

ꢀꢀ

ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ35

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

Nh×nꢀvꢁoꢀc¸cꢀcétꢀcãꢀmꢁuꢀx¸mꢀtrongꢀb¶ngꢀ2.2ꢀtrªnꢀtaꢀcãꢀ®−îcꢀc¸chꢀph©nꢀc«ngꢀ

gi¶iꢀmꢂꢀnh−ꢀsau:ꢀꢀ

Taꢀsöꢀdôngꢀ3ꢀchipꢀgi¶iꢀmꢂꢀchuyªnꢀdôngꢀlꢁꢀviꢀm¹chꢀ74HC138ꢀ®ÓꢀphôcꢀvôꢀviÖcꢀ

gi¶iꢀmꢂꢀ®ÞaꢀchØꢀchoꢀc¸cꢀchipꢀnhíꢀcòngꢀnh−ꢀc¸cꢀchipꢀmëꢀréngꢀI/Oꢀlꢁꢀ8255,ꢀ®Çuꢀvꢁoꢀvꢁꢀraꢀ

cñaꢀc¸cꢀchipꢀgi¶iꢀmꢂꢀ®−îcꢀtr×nhꢀbꢁyꢀtrongꢀb¶ngꢀsau:ꢀ

ꢀ

Chipꢀgi¶iꢀmꢁꢀ

Aꢀ

Bꢀ

Cꢀ

G2Aꢀ

0ꢀ

A4ꢀ Y2(U9)ꢀ Y2(U9)ꢀ

0ꢀ Y3(U9)ꢀ Y3(U9)ꢀ

G2Bꢀ

74HC138ꢀꢃꢀ1ꢀ(U9)ꢀ A14ꢀ A15ꢀ 0ꢀ

0ꢀ

74HC138ꢀꢃꢀ2ꢀ(U10)ꢀ A2ꢀ

74HC138ꢀꢃꢀ3ꢀ(U11)ꢀ A2ꢀ

A3ꢀ

0ꢀ

ꢀ

§ÇuꢀvꢁoꢀchänꢀchipꢀCSꢀ(ChipꢀSelect)ꢀcñaꢀc¸cꢀchipꢀEEPROM,ꢀRAM,ꢀvꢁꢀ8255ꢀnh−ꢀb¶ngꢀ

sau:ꢀ

Chipꢀ

EEPROMꢀꢃꢀ28C64ꢀ

CSꢀ(ChipꢀSelect)ꢀ

A13ꢀ+ꢀY0(U9)ꢀ(*)ꢀ

Y1(U9)ꢀ

Ghiꢀchóꢀ

RAMꢀꢃꢀ62256ꢀ

8255(1)ꢀꢃꢀKeypad,ꢀLCDꢀ

8255(5)ꢀꢃꢀLEDꢀmaꢀtrËnꢀ

8255(2)ꢀꢃꢀADC,ꢀDACꢀ

Y0(U10)ꢀ

U9,U10,U11ꢀ

xemꢀs¬ꢀ®åꢀ

nguyªnꢀlý.ꢀ

Y2(U10)ꢀ

Y3(U10)ꢀ

8255(3)ꢀꢃꢀXungꢀsè,ꢀstepper,ꢀDCꢀmotorꢀ Y1(U10)ꢀ

8255(4)ꢀꢃꢀLEDꢀ7ꢀ®o¹n,ꢀLEDꢀ®¬nꢀ

8255(EX)ꢀ

Y0(U11)ꢀ

Y1(U11)ꢀ

(*)ꢀDoꢀyªuꢀcÇuꢀthiÕtꢀkÕꢀcñaꢀbéꢀKIT,ꢀc¸cꢀchipꢀnhíꢀRAMꢀvꢁꢀEEPROMꢀvõaꢀph¶iꢀcãꢀkh¶ꢀ

n¨ngꢀlꢁmꢀbéꢀnhíꢀd÷ꢀliÖuꢀvꢁꢀbéꢀnhíꢀch−¬ngꢀtr×nhꢀnªnꢀc¸cꢀch©nꢀOEꢀ(OutputꢀEnable)ꢀcñaꢀ

c¸cꢀchipꢀnhíꢀnꢁyꢀcãꢀlogicꢀnh−ꢀsauꢀ/OEꢀ=ꢀ/PSENꢀ*ꢀ/RD.ꢀ

B¶ngꢀ2.2.ꢀB¶nꢀ®åꢀbéꢀnhíꢀvꢁꢀgi¶iꢀmꢂꢀ®ÞaꢀchØꢀcñaꢀKIT

ꢀ

§Óꢀrâꢀh¬nꢀtaꢀt×mꢀhiÓuꢀküꢀvÒꢀchøcꢀn¨ngꢀcñaꢀch©nꢀ/PSENꢀvꢁꢀEAꢀtrongꢀøngꢀdôngꢀ

mëꢀréngꢀbéꢀnhíꢀngoꢁiꢀcñaꢀhäꢀ8051.ꢀPSENꢀ(ProgramꢀStoreꢀEnable)ꢀcãꢀnghÜaꢀlꢁꢀchoꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ36

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

phÐpꢀcÊtꢀch−¬ngꢀtr×nh.ꢀ§©yꢀlꢁꢀtÝnꢀhiÖuꢀraꢀvꢁꢀ®−îcꢀnèiꢀvíiꢀch©nꢀOEꢀcñaꢀbéꢀnhíꢀch−¬ngꢀ

tr×nhꢀngoꢁi.ꢀKhiꢀch©nꢀEAꢀ®−îcꢀnèiꢀ®Êtꢀth×ꢀ8031/51ꢀn¹pꢀmꢃꢀlÖnhꢀtõꢀbéꢀnhíꢀngoꢁiꢀth«ngꢀ

quaꢀch©nꢀPSEN,ꢀëꢀ®©yꢀbéꢀnhíꢀngoꢁiꢀ®ãngꢀvaiꢀtrßꢀlꢁꢀbéꢀnhíꢀch−¬ngꢀtr×nh.ꢀNgoꢁiꢀraꢀkhiꢀ

béꢀnhíꢀngoꢁiꢀlꢁmꢀchøcꢀn¨ngꢀlꢁꢀbéꢀnhíꢀd÷ꢀliÖuꢀth×ꢀtÝnꢀhiÖuꢀRDꢀ®−îcꢀsöꢀdôngꢀ®Óꢀtruyꢀ

cËpꢀkh«ngꢀgianꢀd÷ꢀliÖuꢀngoꢁiꢀ(dïngꢀlÖnhꢀMOVX),ꢀnªnꢀRDꢀ®−îcꢀnèiꢀ®ÕnꢀOEꢀcñaꢀchipꢀ

nhí.ꢀTrongꢀthiÕtꢀkÕꢀphÇnꢀmÒmꢀcñaꢀKITꢀ®ßiꢀháiꢀc¶ꢀ2ꢀchøcꢀn¨ngꢀnꢁyꢀcñaꢀbéꢀnhí,ꢀvõaꢀlꢁꢀ

béꢀnhíꢀch−¬ngꢀtr×nh,ꢀvõaꢀlꢁꢀbéꢀnhíꢀd÷ꢀliÖuꢀdoꢀ®ãꢀc¸cꢀch©nꢀOEꢀcñaꢀc¸cꢀchipꢀnhíꢀph¶iꢀ

cãꢀmøcꢀlogicꢀnh−ꢀtrªnꢀ/OEꢀ=ꢀ/PSENꢀ*ꢀ/RD.

2.3.3ꢀGiíiꢀthiÖuꢀvÒꢀchøcꢀn¨ngꢀcñaꢀc¸cꢀthiÕtꢀbÞꢀ®−îcꢀsöꢀdôngꢀtrªnꢀKIT:ꢀ

2.3.3.1ꢀCPUꢀ

ꢀ

CPU

ꢀ

R10

VCC

D0

D1

D2

D3

D4

D5

D6

D7

1

2

3

4

5

6

7

8

9

VCC

ꢀ

10k

VCC

CR3

104

VCC

ADRRESS:

0000H-1FFFH

ADRRESS:

4000H-7FFFH

CR4

104

GND

U3 62256

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

U13

28

10

9

8

7

6

5

4

3

25

24

21

23

2

VCC

A0

A1

U420

74HC573

U2

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

AT28C64

VCC

2

A0

A1

A2

A3

A4

A5

A6

A7

D0

D1

D2

D3

D4

D5

D6

D7

A8

A9

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

D0

D1

D2

D3

D4

D5

D6

D7

D0

D1

D2

D3

D4

D5

D6

D7

19

18

17

16

15

14

13

12

39

38

37

36

35

34

33

32

21

22

23

24

25

26

27

28

10

9

8

7

6

5

4

3

25

24

21

23

2

11

12

13

15

16

17

18

19

11

12

13

15

16

17

18

19

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

D0

3

P0.0/AD0

P0.1/AD1

P2.0/A8

P2.1/A9

D0

D1

D2

D3

D4

D5

D6

D7

D0

D1

D2

D3

D4

D5

D6

D7

A2

A3

A4

A5

A6

A7

A8

A9

GND

D1

D2

D3

D4

D5

D6

D7

D1

4

A10

A11

A12

A13

A14

A15

D2

5

P0.2/AD2 P2.2/A10

P0.3/AD3 P2.3/A11

P0.4/AD4 P2.4/A12

P0.5/AD5 P2.5/A13

P0.6/AD6 P2.6/A14

P0.7/AD7 P2.7/A15

D3

6

CR5

104

D4

7

D5

8

D6

9

D7

11

VCC

A10

A11

A12

A13

A14

ALE

T2

T2-EX

STEP

RXD

TXD

/INT0

/INT1

T0

T1

/WR

/RD

1

2

3

4

5

6

7

8

10

11

12

13

14

15

16

17

A14

1

LE

1

P1.0/T2

P1.1/T2-EX P3.1/TXD

P3.0/RXD

OE

GND

10

A13 26

26

1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P3.6/WR

P3.7/RD

/CS_62256

GND

U5A 7408

20

27

22

CS

WR

OE

/PSEN

/WR

1

2

3

22

27

20

GND

OE

WE

CE

14

VSS

7

Ñaàu vaøo cho

T0, T1, T2, T2-EX

ôû cheá ñoä CAPTURE

GND

ALE

/PSEN

19

18

30

29

28

VCC

XTAL1

XTAL2

ALE/PROG

PSEN

VCC

/EA

RST

J10

31

9

EA/VPP

RST

40

VCC

GND

T0

T1

T2

1

2

3

4

CR2

104

CR1

104

AT89C52

T2-EX

Y1.1

U11A

GND

1

2

VCC

CHÖÔNG TRÌNH

NGÖÔØI SÖÛ DUÏNG

VCC

3

A13

12 MHz

7432

VCC

7404

7

SW7.1

1

GND

C1.1

33pF

C1.2

33pF

U6A

CR6

104

CR7

104

1

2

/EA

2

1

3

P_COM

U7B

/WR

1

6

2

7

3

8

4

9

5

14

4

5

SWITCH

VCC

ꢀ

GND

VCC

6

GND

RXD OUT

TXD IN

7432

7

VCC

CR8

104

MONITOR

GND

ꢀ

GND

U186

MAX232/SO

VCC

R1OUT

R2OUT

TXD IN

TXD

RXD

13

8

12

9

CR10

104

CR9

104

R1IN

R2IN

VCC

CR12

104

RXD OUT

C8.4

10uF

11

10

14

7

T1IN

T2IN

T1OUT

T2OUT

74HC138

16

U10

U9

U12

VCC

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

VCC

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

VCC

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

A14

A15

A2

/CS_8255_7SEG_LED

/CS_8255_7SEG_EX

A2

A3

A4

/CS_8255_LCD_KEYPAD

/CS_8255_MATRIX_LED

/CS_8255_ADC_DAC

1

3

4

5

2

6

1

2

3

15

14

13

12

11

10

9

1

2

3

15

14

13

12

11

10

9

1

2

3

15

14

13

12

11

10

9

C1+

C1-

C2+

C2-

V+

A

B

C

A

B

C

A

B

C

/CS_62256

GND

VCC

/CS_8255_7SEG_LED_EX12

VCC

/CS_8255_PULSE_STEPPER

C8.1

10uF

6

4

5

6

4

5

VCC

6

4

5

V-

G1

G2A

G2B

G1

G2A

G2B

G1

G2A

G2B

15

VCC

GND

7

8

GND

C8.2

10uF

C8.3

10uF

GND

VCC

H×nhꢀ2.3ꢀ–ꢀS¬ꢀ®åꢀnguyªnꢀlýꢀkhèiꢀCPUꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ37

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

§©yꢀlꢁꢀphÇnꢀ®iÒuꢀkhiÓnꢀtrungꢀt©mꢀcñaꢀbéꢀKIT,ꢀlꢁꢀbéꢀphËnꢀquanꢀträngꢀnhÊt.ꢀKhèiꢀ

CPUꢀgåmꢀcãꢀchipꢀviꢀ®iÒuꢀkhiÓnꢀchÝnhꢀAT89C52,ꢀEEPROM,ꢀRAM,ꢀm¹chꢀchèt,ꢀgi¶iꢀmꢂꢀ

®ÞaꢀchØ...ꢀS¬ꢀ®åꢀnguyªnꢀlýꢀcñaꢀkhèiꢀCPUꢀnh−ꢀh×nhꢀ2.3.ꢀꢀ

C¸cꢀlinhꢀkiÖnꢀchÝnhꢀcãꢀtrongꢀkhèiꢀ:ꢀ

ꢀViꢀ®iÒuꢀkhiÓnꢀAT89C52ꢀ

ꢀ

VíiꢀthùcꢀtÕꢀthÞꢀtr−êngꢀcñaꢀ§ꢁꢀN½ng,ꢀvꢁꢀc¶ꢀkhuꢀvùcꢀMiÒnꢀTrungꢀꢃꢀT©yꢀNguyªnꢀ

nãiꢀchungꢀtaꢀchänꢀAT89C52ꢀlꢁꢀchipꢀdÔꢀdꢁngꢀmuaꢀ®−îc,ꢀbéꢀnhíꢀ8Kbyteꢀvõaꢀ®ñꢀchoꢀ

ch−¬ngꢀtr×nhꢀMONITORꢀ®iÒuꢀhꢁnhꢀKIT.ꢀ

- AT89C52ꢀ cãꢀ 8Kꢀ Flashꢀ ROMꢀ lꢁmꢀ béꢀ nhíꢀ ch−¬ngꢀ tr×nh,ꢀ 256ꢀ byteꢀ RAM,ꢀ 32ꢀ

®−êngꢀxuÊtꢀnhËp,ꢀ3ꢀbéꢀ®Þnhꢀthêi,ꢀmétꢀcÊuꢀtrócꢀng¾tꢀ2ꢀmøcꢀ−uꢀtiªnꢀvꢁꢀ8ꢀnguånꢀng¾t,ꢀmétꢀ

portꢀnèiꢀtiÕpꢀsongꢀc«ngꢀ(fullꢀduplex).ꢀꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ38

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

- TimerꢀT2ꢀcñaꢀ89C52ꢀcãꢀthÓꢀlꢁmꢀviÖcꢀnh−ꢀTimerꢀT0,ꢀT1ꢀtrongꢀchÕꢀ®éꢀReloadꢀ

ngayꢀc¶ꢀëꢀlócꢀlꢁmꢀTimerꢀ16ꢀbit.ꢀ

ꢃꢀVïngꢀnhíꢀFlashꢀROMꢀcãꢀ

thÓꢀ n¹pꢀ vꢁꢀ xãaꢀ kho¶ngꢀ

1000ꢀlÇn.ꢀ

- Viꢀ ®iÒuꢀ khiÓnꢀ AT89C52ꢀ

hçꢀ trîꢀ tÇnꢀ sèꢀ lꢁmꢀ viÖcꢀ ®Õnꢀ 24ꢀ

MHz.ꢀ

-

Cãꢀ chÕꢀ ®éꢀ Powerꢀ Downꢀ

®ÓꢀtiÕtꢀkiÖmꢀ®iÖnꢀꢀn¨ngꢀꢀcñaꢀhÖꢀ

thèngꢀtuyꢀnhiªnꢀvÉnꢀduyꢀtr×ꢀnéiꢀ

dungꢀ RAMꢀ nh−ngꢀ kh«ngꢀ choꢀ

m¹chꢀ daoꢀ ®éngꢀ cÊpꢀ xungꢀ clockꢀ

nh»mꢀv«ꢀhiÖuꢀhãaꢀc¸cꢀho¹tꢀ®éngꢀ

kh¸cꢀ choꢀ chipꢀ choꢀ ®Õnꢀ khiꢀ cãꢀ

H×nhꢀ2.4ꢀꢃꢀS¬ꢀ®åꢀch©nꢀcñaꢀAT89C52ꢀ

resetꢀcøngꢀtiÕpꢀtheo.ꢀChÕꢀ®éꢀIdleꢀhayꢀcßnꢀgäiꢀlꢁꢀchÕꢀ®éꢀnghØꢀdõngꢀCPUꢀtrongꢀkhiꢀvÉnꢀ

choꢀphÐpꢀRAM,ꢀc¸cꢀbéꢀ®Þnhꢀthêi/ꢀ®Õm,ꢀportꢀnèiꢀtiÕpꢀvꢁꢀhÖꢀthèngꢀng¾tꢀtiÕpꢀtôcꢀho¹tꢀ

®éng.

ꢀ

U1

19

18

17

16

15

14

13

12

2

3

4

5

6

7

8

9

M¹chꢀchètꢀtÝnꢀhiÖuꢀ74HC573ꢀ

Q0

D0

D1

D2

D3

D4

D5

D6

D7

Q1

Q2

Q3

Q4

Q5

Q6

Q7

ꢀ

11

1

LE

OE

74HC573

H×nhꢀ2.5ꢀꢃꢀS¬ꢀ®åꢀch©nꢀcñaꢀ74HC573ꢀ

74HC573ꢀlꢁꢀm¹chꢀchètꢀtÝnꢀhiÖuꢀtècꢀ®éꢀcaoꢀ®−îcꢀchÕꢀt¹oꢀtheoꢀc«ngꢀnghÖꢀCMOS.ꢀ

C¸cꢀ®Æcꢀ®iÓmꢀcñaꢀviꢀm¹chꢀ:ꢀ

- Tècꢀ®éꢀtruyÒnꢀtÝnꢀhiÖuꢀtõꢀ®Çuꢀvꢁoꢀsangꢀ®ÇuꢀraꢀchØꢀcãꢀ18ꢀns.ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ39

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

- Ph¹mꢀviꢀ®iÖnꢀ¸pꢀho¹tꢀ®éngꢀ:ꢀ2ꢀ–ꢀ6ꢀVꢀ

- Dßngꢀ®iÖnꢀ®Çuꢀvꢁoꢀ:ꢀlínꢀnhÊtꢀ1 A.ꢀ

Ho¹tꢀ®éngꢀ:ꢀKhiꢀch©nꢀ/LEꢀëꢀmøcꢀcao,ꢀ®ÇuꢀraꢀQꢀphôꢀthuécꢀvꢁoꢀ®ÇuꢀvꢁoꢀD.ꢀKhiꢀch©nꢀ

/LEꢀëꢀmøcꢀthÊp,ꢀtÝnꢀhiÖuꢀ®ÇuꢀvꢁoꢀDꢀ®−îcꢀgi÷ꢀl¹iꢀëꢀ®Çuꢀraꢀchoꢀ®Õnꢀkhiꢀnꢁoꢀch©nꢀ/LEꢀtrëꢀ

l¹iꢀmøcꢀcao.ꢀKhiꢀch©nꢀ/OEꢀëꢀmøcꢀcao,ꢀtÊtꢀc¶ꢀc¸cꢀ®ÇuꢀraꢀQꢀ®Òuꢀëꢀmøcꢀcao.ꢀꢀ

ꢀ

M¹chꢀgi¶iꢀmꢃꢀ®ÞaꢀchØꢀ74HC138

ꢀ

U6

ꢀ

1

2

3

15

14

13

12

11

10

9

A

B

C

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

6

4

5

G1

G2A

G2B

7

ꢀ

74HC138

H×nhꢀ2.6ꢀꢃꢀS¬ꢀ®åꢀch©nꢀcñaꢀ74HC138ꢀ

§©yꢀlꢁꢀviꢀm¹chꢀ®−îcꢀchÕꢀt¹oꢀtheoꢀc«ngꢀnghÖꢀCMOS.ꢀViꢀm¹chꢀnꢁyꢀ®−îcꢀdïngꢀ®Óꢀ

gi¶iꢀmꢂꢀ®ÞaꢀchØꢀkhiꢀhÖꢀthèngꢀcãꢀnhiÒuꢀlinhꢀkiÖnꢀcÇnꢀ®Þnhꢀ®ÞaꢀchØꢀghÐpꢀnèi.ꢀNãꢀlꢁꢀmétꢀ

trongꢀnh÷ngꢀviꢀm¹chꢀphæꢀbiÕnꢀnhÊtꢀtrongꢀc¸cꢀm¹chꢀviꢀ®iÒuꢀkhiÓn.ꢀC¸cꢀch©nꢀ®Çuꢀraꢀ®¶oꢀ

Y_kꢀphôꢀthuécꢀvꢁoꢀc¸cꢀch©nꢀtÝnꢀhiÖuꢀ®ÇuꢀvꢁoꢀA,ꢀB,ꢀC.ꢀTuyꢀnhiªnꢀc¸cꢀtÝnꢀhiÖuꢀ®ÞaꢀchØꢀchØꢀ

®−îcꢀgi¶iꢀmꢂꢀkhiꢀch©nꢀG1(E3)ꢀëꢀmøcꢀHigh,ꢀcßnꢀc¸cꢀch©nꢀ/G2A(/E1),ꢀ/G2B(/E2)ꢀëꢀmøcꢀ

Low.ꢀꢀ

ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ40

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

B¶ngꢀchøcꢀn¨ngꢀcñaꢀviꢀm¹chꢀnh−ꢀsau:ꢀ

ꢀ

Chóꢀý:ꢀL:ꢀLowꢀꢁMøcꢀthÊp;ꢀH:ꢀHighꢀꢁꢀMøcꢀcao;ꢀX:ꢀkh«ngꢀquanꢀt©mꢀ

U4

ꢀ

13

8

12

9

R1IN

R2IN

R1OUT

R2OUT

ꢀ

11

10

14

7

T1IN

T2IN

T1OUT

T2OUT

1

3

4

5

2

6

C1+

C1-

C2+

C2-

V+

ꢀ

V-

H×nhꢀ2.7ꢀ–ꢀ^MS^A¬^X2ꢀ³®²åꢀch©nꢀcñaꢀMAX232ꢀ

ꢀ

Viꢀm¹chꢀMAX232ꢀ

Viꢀm¹chꢀMAX232ꢀcãꢀnhiÖmꢀvôꢀchuyÓnꢀmøcꢀ®iÖnꢀ¸pꢀtõꢀ0ꢀ ꢀ5ꢀVꢀthꢁnhꢀ®iÖnꢀ¸pꢀ–

12Vꢀ ꢀ+12ꢀVꢀtheoꢀtiªuꢀchuÈnꢀRSꢃ232ꢀ®ÓꢀphôcꢀvôꢀchoꢀviÖcꢀtruyÒnꢀth«ngꢀnèiꢀtiÕp.ꢀ

Trªnꢀviꢀm¹chꢀcãꢀ2ꢀngâꢀvꢁoꢀcñaꢀch©nꢀRxD,ꢀ2ꢀngâꢀraꢀcñaꢀch©nꢀRxD,ꢀ2ꢀngâꢀvꢁoꢀcñaꢀ

ch©nꢀTxD,ꢀ2ꢀngâꢀraꢀcñaꢀch©nꢀTxD.ꢀTÝnꢀhiÖuꢀtõꢀch©nꢀRxDꢀcñaꢀcængꢀnèiꢀtiÕpꢀtrongꢀ

m¸yꢀtÝnhꢀ®−îcꢀnèiꢀvꢁoꢀch©nꢀ/R1OUT,ꢀtÝnꢀhiÖuꢀtõꢀch©nꢀTxDꢀcñaꢀcængꢀnèiꢀtiÕpꢀtrongꢀ

m¸yꢀtÝnhꢀ®−îcꢀnèiꢀT1INꢀcñaꢀMAX232.ꢀT−¬ngꢀtù,ꢀch©nꢀRxDꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀ®−îcꢀ

nèiꢀvíiꢀch©nꢀ/T1OUT,ꢀcßnꢀch©nꢀTxDꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀ®−îcꢀnèiꢀvíiꢀch©nꢀR1INꢀcñaꢀ

MAX232.ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ41

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

BéꢀnhíꢀRAMꢀ32Kꢀ62256ꢀ

Viꢀm¹chꢀ62256ꢀ®−îcꢀdïngꢀlꢁmꢀbéꢀnhíꢀd÷ꢀliÖuꢀngoꢁiꢀchoꢀc¸cꢀviꢀ®iÒuꢀkhiÓn.ꢀꢀ

- A0ꢀ ꢀA14ꢀ:ꢀlꢁꢀ15ꢀbitꢀdïngꢀ®Óꢀx¸cꢀ®Þnhꢀ®ÞaꢀchØꢀcñaꢀc¸cꢀvïngꢀnhíꢀtrongꢀRAM.ꢀ

- /OEꢀ:ꢀOutputꢀEnable,ꢀchoꢀphÐpꢀ®äcꢀd÷ꢀliÖuꢀtõꢀꢀRAMꢀraꢀDataꢀBus.ꢀ

- ꢀ/WEꢀ:ꢀWriteꢀEnable,ꢀchoꢀphÐpꢀghiꢀd÷ꢀꢀliÖuꢀvꢁoꢀRAM.ꢀ

- ꢀCS1,ꢀCS2ꢀ:ꢀDïngꢀ®Óꢀchänꢀchip.ꢀ

-

ꢀD0ꢀ ꢀD7ꢀ:ꢀlꢁꢀc¸cꢀch©nꢀnèiꢀvꢁoꢀDataꢀBusꢀcñaꢀhÖꢀthèng.ꢀ

ꢀ

U3 62256

28

10

9

8

7

6

5

4

3

25

24

21

23

2

26

1

ꢀ

VCC

A0

A1

11

12

13

15

16

17

18

19

D0

D1

D2

D3

D4

D5

D6

D7

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

20

27

22

CS

WR

OE

14

VSS

H×nhꢀ2.8ꢀ–ꢀS¬ꢀ®åꢀch©nꢀcñaꢀ62256ꢀ

BéꢀnhíꢀEEPROMꢀ8Kꢀ28C64ꢀ

§©yꢀlꢁꢀbéꢀnhíꢀkh«ngꢀbayꢀh¬iꢀcãꢀthÓꢀ®äcꢀvꢁꢀghiꢀ®−îcꢀb»ngꢀch−¬ngꢀtr×nhꢀnh−ꢀbéꢀ

RAMꢀmꢁꢀkh«ngꢀcÇnꢀsöꢀdôngꢀnh÷ngꢀm¹chꢀn¹pꢀchuyªnꢀdông,ꢀnh−ngꢀcãꢀkh¶ꢀn¨ngꢀb¶oꢀvÖꢀ

d÷ꢀliÖuꢀkhiꢀmÊtꢀnguån.ꢀ

- A0ꢀ ꢀ A12ꢀ :ꢀ lꢁꢀ 12ꢀ bitꢀ dïngꢀ ®Óꢀ x¸cꢀ ®Þnhꢀ ®Þaꢀ chØꢀ cñaꢀ c¸cꢀ vïngꢀ nhíꢀ trongꢀ

EEPROM.ꢀ

-

/OEꢀ:ꢀOutputꢀEnable,ꢀchoꢀphÐpꢀ®äcꢀd÷ꢀliÖuꢀtõꢀꢀEEPROMꢀraꢀDataꢀBus.

ꢀ

- /WRꢀ:ꢀWriteꢀEnable,ꢀchoꢀphÐpꢀghiꢀd÷ꢀꢀliÖuꢀvꢁoꢀEEPROM.ꢀ

ꢀꢀBiªnꢀso¹nꢀ:ꢀL©mꢀt¨ngꢀ§øcꢀ–ꢀLªꢀTiÕnꢀDòngꢀ– Béꢀm«nꢀT§HꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTrangꢀꢀ42

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

- /CEꢀ:ꢀDïngꢀ®Óꢀchänꢀchip.ꢀ

- ꢀD0ꢀ ꢀD7ꢀ:ꢀlꢁꢀc¸cꢀch©nꢀnèiꢀvꢁoꢀDataꢀBusꢀcñaꢀhÖꢀthèng.ꢀ

ꢀ

U2

A0

AT28C64

10

9

8

7

6

5

4

3

25

24

21

23

2

11

12

13

15

16

17

18

19

D0

D1

D2

D3

D4

D5

D6

D7

ꢀ

A1

A2

A3

A4

A5

A6

A7

A8

ꢀ

1

A9 RDY/BUSY

A10

A11

A12

22

27

20

OE

WE

CE

28

VCC

Ngoꢁiꢀc¸cꢀlinhꢀkiÖnꢀchÝnhꢀ®ꢂꢀkÓꢀraꢀëꢀtrªn,ꢀkhèiꢀCPUꢀcßnꢀcãꢀrÊtꢀnhiÒuꢀthꢁnhꢀphÇnꢀ

kh¸cꢀnh−ꢀm¹chꢀResetꢀcñaꢀCPU,ꢀth¹chꢀanhꢀ11.0592ꢀMHzꢀ®Óꢀt¹oꢀdaoꢀ®éngꢀchoꢀviꢀ®iÒuꢀ

khiÓnꢀ89C52...ꢀTrongꢀkhèiꢀCPUꢀcãꢀc«ngꢀt¾cꢀ3ꢀtr¹ngꢀth¸iꢀSW2ꢀꢃꢀSelectꢀchoꢀphÐpꢀng−êiꢀ

hiÖnꢀch−¬ngꢀtr×nhꢀl−uꢀëꢀbéꢀnhíꢀtrongꢀhayꢀbéꢀnhíꢀngoꢁi.ꢀMétꢀ®iÒuꢀcÇnꢀl−uꢀýꢀtrªnꢀm¹chꢀ

CPUꢀlꢁꢀ®ÇuꢀraꢀP0ꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀcÇnꢀtreoꢀtrëꢀv×ꢀcængꢀP0ꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀkh«ngꢀ

®−îcꢀthiÕtꢀkÕꢀcãꢀtrëꢀkh¸ngꢀtrong.ꢀNÕuꢀkh«ngꢀtreoꢀtrëꢀth×ꢀkhiꢀnu«iꢀt¶iꢀlínꢀsÏꢀlꢁmꢀsôtꢀ¸pꢀ

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

2.3.3.2ꢀGiaoꢀtiÕpꢀxuÊt/nhËpꢀ

PhÇnꢀgiaoꢀtiÕpꢀxuÊtꢀnhËpꢀgåmꢀ2ꢀkhèiꢀ:ꢀkhèiꢀhiÓnꢀthÞꢀLCDꢀvꢁꢀkhèiꢀbꢁnꢀphÝm.ꢀS¬ꢀ®åꢀ

nguyªnꢀlýꢀcñaꢀphÇnꢀnꢁyꢀnh−ꢀh×nhꢀ2.10ꢀ:ꢀ

ꢀ

VCC

R9

CR11

VCC

GND

ꢀ

GND

5K

104

4

LCD1

LCD BACK LIGHT POWER

DATA BUS

GND

VCC

U1526

8255

VCC

PA0

PA1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

D0

D1

D2

D3

D4

D5

D6

D7

34

33

32

31

30

29

28

27

SW7.8

D0

D1

D2

D3

D4

D5

D6

D7

J13

3

LCD_RS

LCD_R/W

LCD_E1

LCD_E2

2

1

40

39

38

37

1

3

2

1

PA2

PA3

PA4

PA5

PA6

PA7

1

3

VCC

GND

2

HEADER

2

LCD_D0

LCD_D1

LCD_D2

LCD_D3

LCD_D4

LCD_D5

LCD_D6

LCD_D7

SWITCH

A0

A1

LCD_D0

9

8

18

19

20

21

22

23

24

25

A0

A1

PB0

PB1

PB2

LCD_D1

LCD_D2

LCD_D3

LCD_D4

LCD_D5

LCD_D6

LCD_D7

GND

35

5

36

6

RESET PB3

/RD

VCC

RD

WR

CS

PB4

PB5

PB6

PB7

/WR

/CS_8255_LCD_KEYPAD

14

15

16

17

13

12

11

10

PC0

PC1

PC2

PC3

PC4

PC5

PC6

PC7

R12.1

10K

R12.2

10K

ꢀ

J14

U14

AT89C2051

ROW1

ROW2

ROW3

ROW4

COL1

COL2

COL3

COL4

2

3

6

7

8

9

11

12

13

14

15

16

17

18

19

8

7

6

5

4

3

2

1

P3.0/RXD

P1.0/AIN0

P1.1/AIN1

P1.2

7

GND

P3.1/TXD

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P3.7

GND

P1.3

P1.4

P1.5

P1.6

/INT0

P1.7

5

4

XTAL1

XTAL2

KEYPAD

8255_1

KEYPAD, LCD

ADRRESS:

PA_1:8000H

PB_1:8001H

PC_1:8002H

CW_1:8003H

1

RST/VPP

VCC

Y12.1

20

ꢀ

C12.2

33p

C12.3

GND

12 MHz

33p

GND

VCC

C12.1

BT22

10uF

CR13

104

GND

RST

R12.3

10k

GND

ꢀ

H×nhꢀ2.10ꢀ–ꢀS¬ꢀ®åꢀnguyªnꢀlýꢀphÇnꢀxuÊt/nhËpꢀ

BꢁnꢀphÝmꢀ

GiaoꢀtiÕpꢀbꢁnꢀphÝmꢀchoꢀphÐpꢀng−êiꢀsöꢀdôngꢀcãꢀthÓꢀnhËpꢀd÷ꢀliÖuꢀvꢁꢀth«ngꢀquaꢀc¸cꢀ

phÝmꢀchøcꢀn¨ngꢀ®iÒuꢀkhiÓnꢀho¹tꢀ®éngꢀcñaꢀbéꢀKIT.ꢀꢀ

VíiꢀyªuꢀcÇuꢀcñaꢀKIT,ꢀtaꢀsöꢀdôngꢀbꢁnꢀphÝmꢀd¹ngꢀmaꢀtrËnꢀ®ÓꢀnhËpꢀd÷ꢀliÖu.ꢀ§Óꢀqu¶nꢀ

lýꢀ®−îcꢀc¸cꢀphÝmꢀcñaꢀbꢁnꢀphÝmꢀmꢁꢀkh«ngꢀlꢁmꢀ¶nhꢀh−ëngꢀnhiÒuꢀtíiꢀqu¸ꢀtr×nhꢀthùcꢀhiÖnꢀ

tÝnhꢀto¸nꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀchÝnh,ꢀtaꢀsöꢀdôngꢀriªngꢀmétꢀviꢀ®iÒuꢀkhiÓnꢀlo¹iꢀnháꢀ®Óꢀqu¶nꢀ

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

®Êt.ꢀ

Tæꢀchøcꢀc¸cꢀphÝmꢀgåmꢀc¸cꢀphÝmꢀtõꢀ0ꢀꢃ9ꢀtõꢀAꢃꢀFꢀlꢁmꢀthꢁnhꢀphÇnꢀnhËpꢀd÷ꢀliÖu.ꢀ

C¸cꢀphÝmꢀchøcꢀn¨ngꢀF1,ꢀF2ꢀlꢁꢀphÝmꢀlùaꢀchänꢀc¸cꢀlÖnhꢀtrªnꢀmenu,ꢀphÝmꢀBACKꢀSPACEꢀ

lꢁꢀphÝmꢀxãa,ꢀgiópꢀchØnhꢀsöaꢀkhiꢀnhËpꢀliÖuꢀnhÇm.ꢀPhÝmꢀENTERꢀ®ÓꢀkÝchꢀho¹tꢀlÖnhꢀhiÖnꢀ

hꢁnh,ꢀtïyꢀtheoꢀng÷ꢀc¶nh,ꢀ®−îcꢀhiÓnꢀthÞꢀtrªnꢀLCD.ꢀ

TrªnꢀbéꢀKIT,ꢀbꢁnꢀphÝmꢀ®−îcꢀdÆtꢀt¸chꢀrêiꢀsoꢀvíiꢀc¸cꢀphÇnꢀkh¸cꢀëꢀgãcꢀ®ÓꢀthuËnꢀ

tiÖnꢀchoꢀviÖcꢀthaoꢀt¸oꢀvãiꢀbꢁnꢀphÝm.ꢀS¬ꢀ®åꢀnguyªnꢀlýꢀcñaꢀbꢁnꢀphÝmꢀnh−ꢀh×nhꢀ2.11:ꢀ

ꢀ

BT1

BT2

BT3

BT4

BT5

ꢀ

0

1

2

3

F1

4

5

6

7

BT9

BT6

BT7

BT8

BT10

F2

8

9

A

B

BT11

BT12

BT13

BT14

BT15

J11

ROW1

ROW2

ROW3

ROW4

COL1

COL2

COL3

COL4

1

2

3

4

5

6

7

8

BACK SPACE

ꢀ

C

D

E

F

BT19

BT16

BT17

BT18

BT20

ENTER

HEADER

8

ꢀ

5X4 KEYPAD

ꢀ

H×nhꢀ2.11ꢀ–ꢀS¬ꢀ®åꢀbꢂnꢀphÝmꢀ

DoꢀchØꢀlꢁmꢀnhiÖmꢀvôꢀqu¶nꢀlýꢀc¸cꢀphÝmꢀ®−îcꢀbÊmꢀmꢁꢀkh«ngꢀcÇnꢀxöꢀlýꢀphøcꢀt¹pꢀ

89C2051ꢀcñaꢀhꢂngꢀATMEL.ꢀ

Viꢀ®iÒuꢀkhiÓnꢀnꢁyꢀchØꢀcãꢀhaiꢀcængꢀgiaoꢀtiÕpꢀlꢁꢀP1ꢀvꢁꢀP3.ꢀRiªngꢀcængꢀgiaoꢀtiÕpꢀP3ꢀ

8xC51ꢀnªnꢀnãꢀcãꢀtÊtꢀc¶ꢀnh÷ngꢀ®Æcꢀ®iÓmꢀchungꢀcñaꢀhäꢀnꢁy.ꢀ

ꢀ

Gi¸oꢀtr×nhꢀm«nꢀKüꢀthuËtꢀViꢀ§iÒuꢀKhiÓnꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀCh−¬ng21ꢀ:ꢀthiÕtꢀkÕꢀKitꢀviꢀ®iÒuꢀkhiÓnꢀ

ꢀ

KhiꢀcãꢀmétꢀphÝmꢀ®−îcꢀÊn,ꢀ89C2051ꢀsÏꢀgi¶iꢀmꢂꢀvꢁꢀgöiꢀd÷ꢀliÖuꢀmꢂꢀphÝmꢀ®−îcꢀÊnꢀ

®iÒuꢀkhiÓnꢀchÝnhꢀbiÕtꢀcãꢀphÝmꢀ®−îcꢀÊnꢀthùcꢀhiÖnꢀquaꢀng¾tꢀngoꢁiꢀ1ꢀcñaꢀviꢀ®iÒuꢀkhiÓnꢀ

U1

2

3

6

7

8

9

12

13

14

15

16

17

18

19

P3.0/RXD

P3.1/TXD

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P3.7

P1.0/AIN0

P1.1/AIN1

P1.2

ꢀ

P1.3

P1.4

P1.5

P1.6

11

ꢀ

P1.7

5

4

XTAL1

XTAL2

ꢀ

1

RST/VPP

VCC

20

AT89C2051

MꢁnꢀtinhꢀthÓꢀlángꢀLCDꢀ2408ꢀ

§ÓꢀcãꢀthÓꢀhiÓnꢀthÞꢀmétꢀc¸chꢀthuËnꢀtiÖn,ꢀlinhꢀho¹tꢀc¸cꢀth«ngꢀsèꢀcñaꢀhÖꢀthèngꢀ®ångꢀthêiꢀ

mꢁnꢀtinhꢀthÓꢀlángꢀgåmꢀcãꢀ8ꢀdßng,ꢀmçiꢀdßngꢀcãꢀthÓꢀhiÓnꢀthÞꢀ24ꢀkýꢀtù,ꢀrÊtꢀtiÖnꢀchoꢀng−êiꢀ

söꢀdôngꢀtrongꢀkhiꢀlꢁmꢀviÖcꢀvíiꢀKITꢀëꢀchÕꢀ®éꢀmonitor.ꢀ

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ꢀ

VCC

R8

GND

ꢀ

5K

LCD

LCD BACK LIGHT POWER

GND

VCC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

TÝn hiÖu ®iÒu khiÓn

SW7.2

J12

LCD_RS

LCD_R/W

LCD_E1

LCD_E2

1

3

2

1

3

VCC

GND

2

LCD_D0

HEADER 2

LCD_D1

LCD_D2

LCD_D3

LCD_D4

LCD_D5

LCD_D6

LCD_D7

SWITCH

LCD 24x8

DATA BUS

R/W,ꢀE1,ꢀE2.ꢀꢀ

LCDꢀhayꢀkh«ng.ꢀE1ꢀdïngꢀchänꢀlꢁmꢀviÖcꢀvíiꢀ4ꢀdßngꢀtrªnꢀcñaꢀmꢁnꢀh×nh.ꢀE2ꢀlꢁmꢀviÖcꢀvíiꢀ

LCDꢀ®ꢂꢀthùcꢀhiÖnꢀlÖnhꢀvꢁꢀ®angꢀchêꢀlÖnhꢀtiÕpꢀtheo.ꢀꢀ

liÖuꢀtruyÒnꢀ®Õnꢀnãꢀdïngꢀ®Óꢀ®iÒuꢀkhiÓnꢀnh−ꢀc¸cꢀlÖnhꢀxãaꢀmꢁnꢀh×nh,ꢀ®ÆtꢀvÞꢀtrÝꢀconꢀtrá,ꢀ....ꢀ

NÕuꢀRSꢀëꢀmøcꢀ“1”ꢀc¸cꢀd÷ꢀliÖuꢀtruyÒnꢀ®ÕnꢀLCDꢀ®−îcꢀnãꢀhiÓuꢀlꢁꢀc¸cꢀd÷ꢀliÖuꢀd¹ngꢀkýꢀtùꢀ

cÇnꢀhiÓnꢀthÞꢀ

LCDꢀchØꢀcãꢀmétꢀlÖnhꢀ®äcꢀd÷ꢀliÖuꢀtõꢀLCD,ꢀ®ãꢀchÝnhꢀlꢁꢀlÖnhꢀlÊyꢀtr¹ngꢀth¸iꢀcñaꢀLCDꢀ®Óꢀ

“0”.ꢀ

ꢀ

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ꢀ

MçiꢀlÇnꢀthùcꢀhiÖnꢀmétꢀlÖnh,ꢀLCDꢀph¶iꢀmÊtꢀmétꢀkho¶ngꢀthêiꢀgianꢀ®ÓꢀhoꢁnꢀtÊtꢀviÖcꢀ

nꢁy.ꢀChÝnhꢀv×ꢀvËyꢀkhiꢀraꢀlÖnhꢀthùcꢀhiÖnꢀchoꢀLCD,ꢀtaꢀph¶iꢀtrÔꢀmétꢀkho¶ngꢀthêiꢀgian.ꢀSauꢀ

®ãꢀmíiꢀ®−îcꢀthùcꢀhiÖnꢀlÖnhꢀtiÕpꢀtheo.ꢀTuyꢀnhiªnꢀph−¬ngꢀph¸pꢀtrÔꢀkh«ngꢀ®−îcꢀænꢀdÞnhꢀ

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kiÓmꢀtraꢀLCDꢀ®ꢂꢀs½nꢀsꢁngꢀnhËnꢀd÷ꢀliÖuꢀhayꢀch−aꢀb»ngꢀc¸chꢀkiÓmꢀtraꢀbitꢀcãꢀträngꢀsèꢀ

caoꢀnhÊtꢀꢃꢀD7ꢀꢃꢀcñaꢀthanhꢀghiꢀlÖnhꢀ(l−uꢀýꢀlꢁꢀthanhꢀghiꢀlÖnh,ꢀtøcꢀkhiꢀRSꢀꢀ=ꢀ0),ꢀkhiꢀbitꢀnꢁyꢀ

xuèngꢀ0ꢀb¸oꢀhiÖuꢀLCDꢀ®ꢂꢀs½nꢀsꢁngꢀnhËnꢀlÖnhꢀtiÕpꢀtheo.ꢀPh−¬ngꢀph¸pꢀnꢁyꢀcãꢀ−uꢀ®iÓmꢀ

lꢁꢀlꢁmꢀviÖcꢀænꢀ®Þnh,ꢀ®ångꢀbéꢀvꢁꢀkh«ngꢀph¶iꢀmÊtꢀthêiꢀgianꢀtrÔꢀd−ꢀraꢀkh«ngꢀcÇnꢀthiÕt.ꢀ

§ÓꢀchoꢀLCDꢀcãꢀthÓꢀho¹tꢀ®éng,ꢀ®Çuꢀtiªnꢀtaꢀph¶iꢀkhëiꢀt¹oꢀLCD,ꢀb¸oꢀchoꢀnãꢀbiÕtꢀsèꢀ

hꢁng,ꢀsèꢀkýꢀtùꢀhiÓnꢀthÞꢀtrªnꢀmétꢀhꢁng.ꢀC¸cꢀd÷ꢀliÖuꢀ®iÒuꢀkhiÓnꢀlÇnꢀl−îtꢀ®−îcꢀchuyÓnꢀvꢁoꢀ

DataꢀBusꢀcñaꢀLCDꢀlꢁꢀ38H,ꢀ0EH,ꢀvꢁꢀ06H.ꢀSauꢀc¸cꢀlÖnhꢀkhëiꢀt¹oꢀLCDꢀnꢁyꢀtaꢀmíiꢀcãꢀthÓꢀ

hiÓnꢀthÞꢀkýꢀtùꢀlªnꢀtrªnꢀmꢁnꢀh×nhꢀLCD.ꢀ

ViÖcꢀxãaꢀmꢁnꢀh×nh,ꢀ®−aꢀconꢀtráꢀvÒꢀgãcꢀtrªnꢀbªnꢀtr¸iꢀcãꢀthÓꢀthùcꢀhiÖnꢀ®−îcꢀb»ngꢀ

c¸cꢀchuyÓnꢀd÷ꢀliÖuꢀ®iÒuꢀkhiÓnꢀ01HꢀvꢁoꢀDataꢀBusꢀcñaꢀLCD.ꢀ

nghiÖmꢀchoꢀKIT.ꢀ

ꢀ

S¬ꢀ®åꢀkhèiꢀcñaꢀLCDꢀ2408ꢀ

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Giáo trình Kỹ thuật vi điều khiển - Chương 2: Thiết kế Kit vi điều khiển - Lâm Tăng Đức