Teachers Name : Suman Sarker Telecommunication Technology Subject Name : Microcontroller & Embedded System Subject Code : 6871 Semester : 7th Department : Electronics Ideal Institute Of Science & Technology (IIST)

LECTURE-05 CH-05 CH-05 ASSEMBLY LANGUAGE PROGRAMMING OF INTEL 8051 MICROCONTROLLER

8051 Microcontroller A beginner's guide to 8051 microcontroller with special emphasis on programming and hardware implementation. PROGRAMMING LANGUAGE FOR THE 8051 If you are interested in programming then you are definitely familiar with some programming language and probably written few programs or compiled few codes. If you are not, then I strongly insist that you check it out first i-e read the

basics of programming. Writing codes for the 8051 microcontroller is not much different. You choose some programming language for yourself and then you start writing codes in the correct environment. That's all it takes. There are two languages that you can use to program the 8051.

ASSEMBLY LANGUAGE It is basically a low level programming language for computers and is machine dependant which in simple words means that the code you write for one machine will not be compatible with some other machine. It is composed of words-like instructions called MNEMONICS. Actually I am not going to talk about assembly language in here because that's for you to learn and practise. So

I have made my call. For getting familiar with the assembly language (if you're not already), you must check here for reference (I guess it's the third one you need).here The basics of Assembly language and the 8051's instruction set will be sufficient for programming. I mean that's all you will ever need. Nothing more nothing less.

C language is not so specific and gives you freedom to program free hand and forget about the names specific to some device. You can start writing code in your natural way and the compiler will take care of the internal operations for you. This makes things a lot more easier as compared to Assembly Language.

Assembly language is very specific and a bit complicated. Being a low level language, it is not easily understandable at first sight but being very specific, it gives you total control over what you do. You can even determine the total machine cycles of the whole code you have written. You can call each register by name and store / manipulate values in it or you can generate exact time delays by using simple statements.

80512/16/2014 5:23 p.m. You need to get familiar with C language first and after getting hold of it, you can move to embedded C language and you will see that there is not much difference. You just have to know about the particular microcontroller architecture for writing a program code for it. As far as the 8051 microcontroller is concerned, you can use the book "The 8051 Microcontroller and Embedded. Systems. Using Assembly and C" By Muhammad Ali Mazidi and Janice Gillispie Mazidi which is an excellent reference for getting introduced to embedded C language for the 8051 microcontroller.

Next Lecture SUBROUTINE