PIC 16F84 và một số ứng dụng.doc

NHAÄN XEÙT CUÛA GIAÙO VIEÂN HÖÔÙNG DAÃN

.........................................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

Trang1_56

NHAÄN XEÙT CUÛA HOÄI ÑOÀNG PHAÛN BIEÄN

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

..................................................................................................................................

Trang2_56

LÔØI CAÛM ÔN

PIC laø moät doøng vi ñieàu khieån khaù môùi meû ôû nöôùc ta. Laàn ñaàu tieân chuùng em

tieáp xuùc vôùi noù do ñoù vieäc tìm hieåu noù gaëp raát nhieàu khoù khaên. Tuy nhieân nhôø söï

giuùp ñôõ nhieät tình cuûa giaùo vieân höôùng daãn_thaày Voõ Töôøng Quaân cuøng vôùi söï hoã

trôï nhieät tình cuûa caùc baïn trong lôùp, chuùng em ñaõ hoaøn thaønh toát ñoà aùn naøy. Chuùng

em xin chaân thaønh caûm ôn Thaày vaø caùc baïn.

Laàn ñaàu tieân tìm hieåu veà doøng PIC neân chaén khoâng traùnh khoûi nhöõng thieáu

soùt, chuùng em mong seõ nhaän ñöôïc nhöõng höôùng daãn quyù baùu cuûa caùc Thaày trong

Boä moân vaø caùc yù kieán ñoùng goùp cuûa caùc baïn ñeå coù theå tieáp tuïc tìm hieåu sau hôn veà

doøng vi ñieàu khieån PIC.

Trang3_56

LÔØI GIÔÙI THIEÄU

Ngaøy nay, vôùi toác ñoä phaùt trieån maïnh meõ cuûa coâng ngheä töï ñoäng trong taát caû

moïi lónh vöïc thì vieäc tìm hieåu vaø öùng duïng caùc doøng chip Vi ñieàu khieån laø moät vaán

ñeà caàn ñöôïc quan taâm. Hoï Vi ñieàu khieån 8051 raát quen thuoäc vôùi chuùng ta, vaø noù

töøng ñöôïc xem laø hoï vi ñieàu khieån raát öu vieät. Tuy nhieân vôùi nhu caàu ngaøy caøng

cao veà tính oån ñònh, toác ñoä xöû lyù cuõng nhö khaû naêng tieáp caän deã daøng cuûa ngöôøi

duøng, thì hoï 8051 ñaõ khoâng phaùt huy ñöôïc öu theá cuûa mình.

Caùc chip vi ñieàu khieån thuoäc doøng PIC cuûa haõng Microchip

coù leõ khoâng quaù

xa laï. Vôùi coâng ngheä RISC (Reduced Instruction Set Computer) naâng cao ñaùng keå toác

ñoä xöû lyù, khaû naêng choáng nhieãu, khaû naêng môû roäng toát, khaû naêng naïp laïi treân 1000

laàn, taäp leänh ñôn giaûn, ñöôïc hoã trôï laäp trình döôùi daïng Macro vaø ña daïng veà chuûng

loaïi, thì doøng PIC laø moät doøng vi ñieàu khieån toát nhaát trong caùc öùng duïng töï ñoäng töø

ñôn giaõn ñeán phöùc taïp nhaát. Tuy nhieân ñeán giôø noù coøn khaù môùi meû vaø vaãn chöa

ñöôïc öùng duïng roäng raõi. Vì theá vieäc tìm hieåu doøng vi ñieàu khieån naøy laø moät nhu

caàu thöïc teá vaø noù höùa heïn mang laïi nhieàu hieäu quaû thieát thöïc phuïc vuï cho coâng

ngheä töï ñoäng.

PIC16F84 laø moät tieâu bieåu, coù theå ñöôïc coi laø chip vi ñieàu khieån ñôn giaûn

nhaát cuûa doøngï PIC. Vôùi 2 Port, 18 chaân vaø ñaày ñuû caùc tính chaát öu vieät cuûa doøng

PIC, PIC16F84 phuø hôïp vôùi caùc öùng duïng vöøa vaø nhoû, nhaát laø caùc thí nghieäm phuïc

vuï hoïc taäp, nghieân cöùu.

Chuùng em mong raèng vôùi ñoà aùn “PIC16F84 vaø moät soá öùng duïng” seõ laø böôùc

khôûi ñaàu môû ra caùi nhìn gaàn guõi hôn veà doøng PIC ñeå töø ñoù chuùng ta coù theâm moät

coâng cuï ñaéc löïc trong ñieàu khieån töï ñoäng.

Trang4_56

MUÏC LUÏC

NHAÄN XEÙT CUÛA GIAÙO VIEÂN HÖÔÙNG DAÃN................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

........................................................................................................................................................1

NHAÄN XEÙT CUÛA HOÄI ÑOÀNG PHAÛN BIEÄN....................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

.......................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

........................................................................................................................................................2

LÔØI CAÛM ÔN...................................................................................................................................3

LÔØI GIÔÙI THIEÄU.............................................................................................................................4

Trang5_56