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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In the 8051 , one machine cycle lasts 12 oscillator periods . Therefore , to cal- culate the machine cycle , we take 1/12 of the crystal frequency , then take its inverse , as shown in Example 3-13 . Example 3-13 The following shows ...
Find the system frequency if the machine cycle = 1.2 μs . 28. Find the machine cycle if crystal frequency is 18 MHz . 29. Find the machine cycle if crystal frequency is 12 MHz . 30. Find the machine cycle if crystal frequency is 25 MHz ...
( a ) ( b ) Create a square wave of 50 % duty cycle on bit 0 of port 1 . Create a square wave of 66 % duty cycle on bit 3 of port 1 . Solution : ( a ) The 50 % duty cycle means that the " on " and " off " state ( or the high and low ...
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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 Mazidi Muhammad Ali No preview available - 2007 |