The 8051 Microcontroller and Embedded Systems, Volume 1For 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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Page 208
Muhammad Ali Mazidi, Janice Gillispie Mazidi. An interrupt is an external or internal event that interrupts the microcon- troller to inform it that a device needs its service . In this chapter we explore the concept of the interrupt and ...
Muhammad Ali Mazidi, Janice Gillispie Mazidi. An interrupt is an external or internal event that interrupts the microcon- troller to inform it that a device needs its service . In this chapter we explore the concept of the interrupt and ...
Page 230
... interrupt . We can cause an interrupt with an instruction which raises the interrupt flag . Review Questions 1. True or false . Upon reset , all interrupts have the same priority . 2. What register keeps track of interrupt priority in ...
... interrupt . We can cause an interrupt with an instruction which raises the interrupt flag . Review Questions 1. True or false . Upon reset , all interrupts have the same priority . 2. What register keeps track of interrupt priority in ...
Page 232
... 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 INT1 ? How about the pin numbers on port 3 ? 35. Which bit of IE belongs to the EXO ...
... 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 INT1 ? How about the pin numbers on port 3 ? 35. Which bit of IE belongs to the EXO ...
Contents
CHAPTERS | 1 |
The 8051 Microcontrollers | 23 |
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors | 24 |
Copyright | |
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Other editions - View all
The 8051 Microcontroller And Embedded Systems Using Assembly And C, 2/E Muhammad Ali Mazidi,Mazidi No preview available - 2007 |
Common terms and phrases
ACALL ACALL DELAY addr addressing mode ASCII Assembly language baud rate binary bit addresses carry flag Chapter CJNE connected convert data pins decimal decoder discussed DJNZ DPTR EPROM Example execution external interrupt Figure flag bit frequency I/O ports instruction INT1 Intel interfacing interrupt vector table jump latch LCALL LJMP load logic loop machine cycle memory chip memory location microcontroller microprocessor MOV P1 MOV RO MOVX Notice NV-RAM on-chip ROM opcode operand output pointer program counter PSEN pull-up resistors pulse RAM location register bank reset Review Questions SBUF SECTION serial communication SETB TR1 Show signal SJMP Solution square wave stack stepper motor stop bit SUBB subroutine target address TCON timer Timer/counter TMOD transfer transistors True or false voltage Write a program