The 8051 Microcontroller and Embedded Systems, Volume 1
For 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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If C / T = 0 , the crystal frequency attached to the 8051 is the source of the clock for the timer . This means that the size of the crystal frequency attached to the 8051 also decides the speed at which the 8051 timer ticks .
Example 9-14 Assuming that XTAL = 11.0592 MHz , find ( a ) the frequency of the square wave generated on pin P1.0 in the following program , and ( b ) the smallest frequency achievable in this program , and the TH value to do that .
Baud rates for SMOD = 0 When SMOD = 0 , the 8051 divides 1/12 of the crystal frequency by 32 and uses that frequency for timer 1 to set the baud rate . In the case of XTAL = 11.0592 MHz we have : = Machine cycle freq .
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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