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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a Look - up table and the use of indexed addressing mode The look - up table is a widely used concept in microprocessor programming . It allows access to elements of a frequently used table with minimum operations .
It jumps to a fixed location in memory called the interrupt vector table that holds the address of the interrupt service routine . 4. The microcontroller gets the address of the ISR from the interrupt vector table and jumps to it .
This can be done with simple instructions to set the interrupts high and thereby cause the 8051 to jump to the interrupt vector table . For example , if the IE bit for timer 1 is set , an instruction such as “ SETB TF1 ” will interrupt ...
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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