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. |
From inside the book
Results 1-3 of 42
Page 82
... 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 , # 100 BACK : MOV R2 , # 200 34 ...
... 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 , # 100 BACK : MOV R2 , # 200 34 ...
Page 336
... DJNZ byte , target Function : Flags : Decrement and jump if not zero None In this instruction a byte is decremented ... DJNZ R2 , BACK ; repeat if R2 not = zero The following two formats are supported by this instruction . 1. Register ...
... DJNZ byte , target Function : Flags : Decrement and jump if not zero None In this instruction a byte is decremented ... DJNZ R2 , BACK ; repeat if R2 not = zero The following two formats are supported by this instruction . 1. Register ...
Page 426
... DJNZ RO , rel MOV MOV [ 3B , 2C ) A , RO RO , A [ 2B , 2C ) MOV MOV CJNE 9 dir , R1 SUBB A , R1 DJNZ [ 2B , 2C ) R1 , dir [ 2B , 2C ) XCH MOV MOV R1 , #data , rel A , R1 R1 , rel A , R1 R1 , A ( 3B , 2C ) ( 2B , 2C ) MOV SUBB A dir , R2 ...
... DJNZ RO , rel MOV MOV [ 3B , 2C ) A , RO RO , A [ 2B , 2C ) MOV MOV CJNE 9 dir , R1 SUBB A , R1 DJNZ [ 2B , 2C ) R1 , dir [ 2B , 2C ) XCH MOV MOV R1 , #data , rel A , R1 R1 , rel A , R1 R1 , A ( 3B , 2C ) ( 2B , 2C ) MOV SUBB A dir , R2 ...
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