The 8051 Microcontroller and Embedded Systems, Volume 1
Prentice Hall, 2000 - Digital control systems - 435 pages
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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... Flag Bits Instruction CY OV AC ADD X X X ADDC X X X SUBB X X X MUL 0 X DIV 0 X DA X RRC X RLC X SETB C 1 CLR C 0 CPL C X ANL C , bit X ANL C , / bit X ORL C , bit ORL C , / bit X X MOV C , bit X CJNE X Note : X can be 0 or 1 . Example 2 ...
... bit addresses of less than 80H are assigned to RAM loca- tions 202FH . 36. True or false . The bit addresses of 80H and beyond are assigned to SFR ( spe- cial function registers ) . 37. Write instructions to save the CY flag bit in bit ...
Muhammad Ali Mazidi, Janice Gillispie Mazidi. Importance of the RI flag bit steps . In receiving bits via its RxD pin , the 8051 goes through the following 1. It receives the start bit indicating that the next bit is the first bit of the ...
The 8051 Microcontrollers
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors
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