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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SECTION 11.3 : PROGRAMMING EXTERNAL HARDWARE INTERRUPTS 33. True or false . A single interrupt is assigned to each of the external hardware interrupts EXO and EX1 . 34. What address in the interrupt vector table is assigned to INTO and ...
External ROM for data To connect the 8031/51 to external ROM containing data , we use RD ( pin P3.7 ) . See Figure 14-13 . Notice the role of signals PSEN and RD . For the ROM containing the program code , PSEN is used to fetch the code ...
For which of the following must we have external memory for program code ? ( a ) 8751 ( b ) 89C51 ( c ) 8031 ... Which of the following signals must be used in fetching program code from external ROM ? ( a ) RD ( b ) WR ( C ) PSEN 40.
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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