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 289
... PSEN Another important signal for the 8031/51 is the PSEN ( program store enable ) signal . PSEN is an output signal for the 8031/51 microcontroller and must be connected to the OE pin of a ROM containing the program code . In other ...
... PSEN Another important signal for the 8031/51 is the PSEN ( program store enable ) signal . PSEN is an output signal for the 8031/51 microcontroller and must be connected to the OE pin of a ROM containing the program code . In other ...
Page 296
... PSEN and RD signals to such a ROM ? Notice in the previous discussion that PSEN is used to access the external code space and the RD signal is used to access the external data space . To allow a single ROM chip to provide both program ...
... PSEN and RD signals to such a ROM ? Notice in the previous discussion that PSEN is used to access the external code space and the RD signal is used to access the external data space . To allow a single ROM chip to provide both program ...
Page 301
... PSEN ? 39. Which of the following signals must be used in fetching program code from external ROM ? ( a ) RD ( b ) WR ( c ) PSEN 40. For the 8031 - based system with external program ROM , when the microcon- troller is powered up , it ...
... PSEN ? 39. Which of the following signals must be used in fetching program code from external ROM ? ( a ) RD ( b ) WR ( c ) PSEN 40. For the 8031 - based system with external program ROM , when the microcon- troller is powered up , it ...
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 |
Common terms and phrases
ACALL ACALL DELAY addr addressing mode ASCII Assembly language baud rate binary bit addresses carry flag Chapter CJNE connected convert data pins decimal decoder discussed DJNZ DPTR EPROM Example execution external interrupt Figure flag bit frequency I/O ports instruction INT1 Intel interfacing interrupt vector table jump latch LCALL LJMP load logic loop machine cycle memory chip memory location microcontroller microprocessor MOV P1 MOV RO MOVX Notice NV-RAM on-chip ROM opcode operand output pointer program counter PSEN pull-up resistors pulse RAM location register bank reset Review Questions SBUF SECTION serial communication SETB TR1 Show signal SJMP Solution square wave stack stepper motor stop bit SUBB subroutine target address TCON timer Timer/counter TMOD transfer transistors True or false voltage Write a program