The 8051 Microcontroller and Embedded Systems, Volume 1
Prentice Hall, 2000 - Digital control systems - 435 pages
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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... opcode and operand are placed in ROM memory locations starting at 0000 as shown in the list below . The list shows that address 0000 con- tains 7D which is the opcode for moving a value into register R5 , and address 0001 con- tains the ...
... opcode for the “ ADD A , R7 " instruction . The opcode for instruction “ ADD A , # 12H " is located at address 0008 and the operand 12H at address 0009. The memory location 000A has the opcode for the SJMP instruction and its target ...
... opcode and the second byte is the relative address . The target address is relative to the value of the program counter . To calculate the target address , the second byte is added to the PC of the instruc- tion immediately below the ...
The 8051 Microcontrollers
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors
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