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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... INT1 In this program , the microcontroller is looping continuously in the HERE loop . Whenever the switch on INT1 ( pin P3.3 ) is activated , the microcontroller gets out of the loop and jumps to vector location 0013H . The ISR for INT1 ...
... INT1 bits in the IE registers are enabled . After the hardware interrupts in the IE register are enabled , the controller keeps sampling the INTn pin for a low - level signal once each machine cycle . According to one manufacturer's ...
... INT1 ( external interrupt 1 ) , then ( b ) discuss what happens if INTO , INT1 , and TFO are activated at the same time . Assume that the interrupts are both edge - triggered . Solution : ( a ) MOV IP , # 00000100B ; IP . 2-1 to assign ...
The 8051 Microcontrollers
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors
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