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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... program in Example 15-3 , it is recommended that you use the EQU directive for port addresses as shown next . APORT EQU 1000H BPORT EQU 1001H CPORT EQU 1002H CNT PORT EQU 1003H MOV A , # 90H MOV DPTR , #CNT PORT DPTR , #APORT MOVX ...
writing commands to the LCD with checking busy flag ; PA of 8255 connected to DO - D7 of LCD and ; PB0 = RS , PB1 = R / W , PB2 = E for 8255 to LCD's control pins connect . MOV A , # 80H MOV RO , #CNTPORT MOVX ...
New data write subroutine with checking busy flag INDATAWRT : MOV R2 , A MOV A , # 90H MOV RO , #CNT PORT #CNTPORT MOVX ... RO RLC A JC READY MOV A , # 80H MOV RO , #CNT PORT MOVX MOV A , R2 MOV RO , #APORT MOVX ...
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The 8051 Microcontrollers
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors
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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