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 180
Assume that XTAL = 16 MHz . find the TH1 , TL1 value to generate a time delay of 5 ms . Timer 1 is programmed in mode 1 . 22. Assuming that XTAL = 11.0592 MHz , program timer 0 to generate a time a delay of 2.5 ms . 23.
Assume that XTAL = 16 MHz . find the TH1 , TL1 value to generate a time delay of 5 ms . Timer 1 is programmed in mode 1 . 22. Assuming that XTAL = 11.0592 MHz , program timer 0 to generate a time a delay of 2.5 ms . 23.
Page 266
ROW 0 : MOV DPTR , #KCODEO ; set DPTR = start of row 0 SJMP FIND ; find col . key belongs to ROW 1 : MOV DPTR , # KCODE1 ... if zero , get the ASCII code INC DPTR ; point to next col . address SJMP FIND ; keep searching MATCH : CLR A ...
ROW 0 : MOV DPTR , #KCODEO ; set DPTR = start of row 0 SJMP FIND ; find col . key belongs to ROW 1 : MOV DPTR , # KCODE1 ... if zero , get the ASCII code INC DPTR ; point to next col . address SJMP FIND ; keep searching MATCH : CLR A ...
Page 322
Find the control word for PA = output with handshaking , PB = output with = handshaking . Unused bits of PC = don't care . SUMMARY This chapter described how to expand the I / O ports of the 8031/51 by connecting it to an 8255 chip .
Find the control word for PA = output with handshaking , PB = output with = handshaking . Unused bits of PC = don't care . SUMMARY This chapter described how to expand the I / O ports of the 8031/51 by connecting it to an 8255 chip .
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Contents
CHAPTERS | 1 |
The 8051 Microcontrollers | 23 |
8051 ASSEMBLY LANGUAGE PROGRAMMING | 35 |
Copyright | |
18 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 accumulator activated addition addressing mode ASCII assembler assigned Assume BACK bank baud rate binary bit addresses byte called carry Chapter chip clear command communication connected contents convert counter cycle decimal delay devices direct discussed DJNZ DPTR enable Example execution external Figure Find flag frequency Function gates ground hardware indicate input instruction interfacing internal interrupt jump latch load logic loop machine memory microcontroller mode MOVX Note Notice on-chip operand operation output pointer port provides pulse RAM location receive referred result serial SETB Show shown signal SJMP Solution space stack steps stop subroutine Table timer transfer True or false Write a program XTAL
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 |
| Subjects | › House & Home / Equipment, Appliances & Supplies |
| Export Citation | BiBTeX EndNote RefMan |