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 82
MOV R3 , # 150 NOP NOP NOP DJNZ R3 , HERE RET DELAY : MOV R3 , # 200 33. Find the time delay for the delay subroutine shown to the right , if the system fre- quency is 16 MHz . HERE : NOP NOP NOP DJNZ R3 , HERE RET DELAY : MOV R5 ...
MOV R3 , # 150 NOP NOP NOP DJNZ R3 , HERE RET DELAY : MOV R3 , # 200 33. Find the time delay for the delay subroutine shown to the right , if the system fre- quency is 16 MHz . HERE : NOP NOP NOP DJNZ R3 , HERE RET DELAY : MOV R5 ...
Page 336
DJNZ byte , target Function : Flags : Decrement and jump if not zero None In this instruction a byte is decremented , and if the result is not zero it will jump to target address . Example : Count from 1 to 20 and send the count to P1 .
DJNZ byte , target Function : Flags : Decrement and jump if not zero None In this instruction a byte is decremented , and if the result is not zero it will jump to target address . Example : Count from 1 to 20 and send the count to P1 .
Page 426
... A C [ 2C ] [ 2C ] [ 2C ) [ 2C ] [ 2C ] DIV SUBB MUL CJNE A. → SWAP DA CLR AB CPL A , #data AB #data , rel A A [ 2B , 4C ] A [ 28 ] [ 4C ] A [ 3B , 2C ] MOV SUBB CJNE XCH DJNZ MOV MOV 5 dir , dir A , dir A , dir , rel A , dir dir ...
... A C [ 2C ] [ 2C ] [ 2C ) [ 2C ] [ 2C ] DIV SUBB MUL CJNE A. → SWAP DA CLR AB CPL A , #data AB #data , rel A A [ 2B , 4C ] A [ 28 ] [ 4C ] A [ 3B , 2C ] MOV SUBB CJNE XCH DJNZ MOV MOV 5 dir , dir A , dir A , dir , rel A , dir dir ...
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Contents
CHAPTERS | 1 |
The 8051 Microcontrollers | 23 |
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors | 24 |
Copyright | |
19 other sections not shown
Other editions - View all
The 8051 Microcontroller and Embedded Systems: Using Assembly and C Mazidi Muhammad Ali 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
Bibliographic information
| Title | The 8051 Microcontroller and Embedded Systems, Volume 1 The 8051 Microcontroller and Embedded Systems, Muhammad Ali Mazidi |
| Authors | Muhammad Ali Mazidi, Janice Gillispie Mazidi |
| Edition | illustrated |
| Publisher | Prentice Hall, 2000 |
| Original from | the University of Michigan |
| Digitized | 5 Aug 2011 |
| ISBN | 0138610223, 9780138610227 |
| Length | 435 pages |
| Export Citation | BiBTeX EndNote RefMan |