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
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Page 88
... BACK : MOV A , PO MOV P1 , A SJMP BACK = ; A FF hex ; make PO an input port ; by writing all ls to it ; get data from PO ; send it to port 1 ; keep doing it Port 0 Dual role of port 0 As shown in Figure 4-1 , port 0 is also designated ...
... BACK : MOV A , PO MOV P1 , A SJMP BACK = ; A FF hex ; make PO an input port ; by writing all ls to it ; get data from PO ; send it to port 1 ; keep doing it Port 0 Dual role of port 0 As shown in Figure 4-1 , port 0 is also designated ...
Page 91
... BACK : MOV ACALL P1 , # 55H DELAY MOV P1 , # 0AAH ACALL DELAY SJMP BACK We can write another variation of the above code by using a technique called read - modify - write . This is shown next . Read - modify - write feature The ports in ...
... BACK : MOV ACALL P1 , # 55H DELAY MOV P1 , # 0AAH ACALL DELAY SJMP BACK We can write another variation of the above code by using a technique called read - modify - write . This is shown next . Read - modify - write feature The ports in ...
Page 105
... BACK : CLR A MOV @RO , A INC DPTR INC RO DJNZ R2 , BACK HERE : SJMP HERE ORG MYDATA : DB 250H " AMERICA " END ; LOAD ROM POINTER LOAD RAM POINTER ; LOAD COUNTER ; A = 0 ; MOVE DATA FROM CODE SPACE ; SAVE IT IN RAM ; INCREMENT ROM ...
... BACK : CLR A MOV @RO , A INC DPTR INC RO DJNZ R2 , BACK HERE : SJMP HERE ORG MYDATA : DB 250H " AMERICA " END ; LOAD ROM POINTER LOAD RAM POINTER ; LOAD COUNTER ; A = 0 ; MOVE DATA FROM CODE SPACE ; SAVE IT IN RAM ; INCREMENT ROM ...
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, 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