The 8051 Microcontroller and Embedded Systems, Volume 1
For courses teaching the 8051 Microcontoller.
This book uses a step-by-step approach to teach the fundamentals of assembly language programming and interfacing of the 8051 microcontroller. It uses many examples to clarify concepts. Simple, concise examples are utilized to show what action each instruction performs, then a sample is provided to show its application. This text provides a comprehensive understanding of the internal organization of the 8051 registers and resources in a way that sheds the student's fear of assembly language. Whether students become designers of stand-alone systems or complex embedded systems, they will find this text a useful resource.
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Port 0 with Pull - Up Resistors Pl . ; A MOV MOV A , #OFFH PO , A FF hex ; make PO an input port ; by writing all 1s to it iget data from PO ; send it to port 1 ; keep doing it BACK : MOV A , PO MOV P1 , A SJMP BACK Dual role of port 0 ...
BACK : MOV A , # 55H MOV P1 , A ACALL DELAY MOV A , # 0AAH ОААН MOV P1 , A ACALL DELAY SJMP BACK The above code toggles every bit of Pl continuously . We have seen a variation of the above program before . Now we can rewrite the above ...
Solution : ; ( a ) This method uses a counter ORG 0000 MOV DPTR , #MYDATA ; LOAD ROM POINTER MOV RO , # 40H ; LOAD RAM POINTER MOV R2 , # 7 ; LOAD COUNTER BACK : CLR A ; A = 0 MOVC A , A + DPTR ; MOVE DATA FROM CODE SPACE MOV ...
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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