the 8051 microcontroller ayala

Ngày tải lên: 04/10/2013, 19:10

Ngày tải lên: 19/10/2013, 14:15

Ngày tải lên: 23/10/2013, 12:15

... bus. The CPU can access memory from addresses 0000 to FFFFH Assume that the code for the CPU to move a value to register A is B0H and the code for adding a value to register A is 04H The action ... Information Engineering National Cheng Kung University, TAIWAN Chung-Ping Young 楊中平 8051 MICROCONTROLLERS The 8051 Microcontroller and Embedded Systems: Using Assembly and C Mazidi, Mazidi and McKinlay ... University, TAIWAN 27 HANEL INSIDE THE COMPUTER More about Address Bus  The more address buses available, the larger the number of devices that can be addressed  The number of locations with...

Ngày tải lên: 20/01/2014, 03:20

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Ngày tải lên: 25/01/2014, 09:20

... mode 1 1.Load the TMOD value 2.Load registers TL and TH 3.Start the timer (SETB TR0 or SETB TR1) 4.Keep monitoring the timer flag (TF) 5.Stop the timer (CLR TR0 or CLR TR1) 6.Clear the TF flag 7.Go ... loaded into the timer Finding values to be loaded into the timer Assuming XTAL =11.0592MHz from Example 9-10 1.Divide the desired time delay by 1.085μs 2.Perform 65536-n, where n is the decimal ... where n is the decimal value we got in Step 1 3.Convert the result of Step 2 to hex, where yyxx is the initial hex value to be loaded into the timer’s registers 4.Set TL = xx and TH = yy   2002...

Ngày tải lên: 27/10/2013, 19:15

Ngày tải lên: 12/12/2013, 22:42

... well, just prior to the stop bit. The bits are transmitted at specific time intervals determined by the baud rate of the serial signal. The baud rate is the reciprocal of the time to send 1 ... program to do the following jobs: 1. Set up the stepper motor and stepper motor driver circuit 2. Interface the PC to the 8051 through a serial communication link. Control the movement of the stepper ... from the PC. ã When the character 'l' is received from the PC, make the stepper motor turn left. Also display the message "Moving left" on an LCD interfaced to the 8051. ...

Ngày tải lên: 20/01/2014, 02:20

... sides of the microcontroller represent wires connecting inner blocks with the pins on the housing of the microcontroller so called bonding lines. Chart on the following page represents the center ... pins. The picture below shows what a microcontroller looks like inside. Physical configuration of the interior of a microcontroller Thin lines which lead from the center towards the sides ... reversed. Data goes from memory through the bus to the sending location, and then to the receiving unit according to the protocol. 1.6 Timer unit Since we have the serial communication explained,...

Ngày tải lên: 25/01/2014, 16:20

... you to leave them in circuit and not have to pull them out to erase them and then reprogram them. They also give a new dimension to products allowing them to be reprogrammed in the field. I should ... intro- duce you to the five elements of a microcontroller project and explain some of the terms and concepts relating to them. The five aspects of every microcontroller project are: ■ Microcontroller ... to the PIC microcontroller line up since the sec- ond edition. The most significant differences that you will see is the wider voltage range available throughout the line; previously when PIC microcontrollers...

Ngày tải lên: 20/02/2014, 17:20

Ngày tải lên: 01/06/2014, 12:31

... zero and the other has a non-zero initizializer. Further- more the program has a single procedure other than main and repeatedly calls this procedure. Before we can execute the program there are ... Architecture The STM32, illustrated in Figure 2.3 connects the three buses defined by the Cortex-M3 through a micro-controller level bus matrix. In the STM32, the ICode bus connects the CM3 instruction ... git://github.com/texane/stlink.git The README file describes the installation process. The STM32VL Discovery board utilizes the STLINKv1 protocol which is somewhat problem- atic in either case because of the manner in...

Ngày tải lên: 08/07/2014, 20:23

... whether or not the result was equal to zero, was negative, or caused an overflow. These status bits are available in the PIC microcontroller, but are supplemented by all the other bits in the processor, ... you to leave them in circuit and not have to pull them out to erase them and then reprogram them. They also give a new dimension to products allowing them to be reprogrammed in the field. I should ... in a microcontroller is half the battle in understanding how they are used; along with changing the function of an I/O pin, they may also require other features (such as a timer or the microcontroller s...

Ngày tải lên: 12/08/2014, 23:21

... at the number of new developers I meet who do not understand the value of simulation; they often write their code, build the applications, program the PIC microcontrollers, plug them into the ... to use them. The two statement types that are required for an application are the PIC microcontroller instructions and the directives. The instructions are the application itself, and the end directive ... into their applications. These files were written to provide the application developer with the addresses of the PIC microcontroller hardware registers, along with some other parameters, in the...

Ngày tải lên: 12/08/2014, 23:21

... in the PIC microcontroller, the offset to the start of the array variable has to be added to the element number to get the register address within the PIC microcontroller. Thus, to carry out the ... In the dia- gram, you can see that the PCLATH bits are combined with the data coming out of the ALU after the addition operation and then are passed back to the 13-bit counter (the actual PIC microcontroller ... can see that the result from the ALU can be stored either back into the file registers or into the w register. When storing the result back into the file registers, the same address as the source...

Ngày tải lên: 12/08/2014, 23:21

Ngày tải lên: 12/08/2014, 23:21

Ngày tải lên: 12/08/2014, 23:21

Ngày tải lên: 12/08/2014, 23:21

Ngày tải lên: 12/08/2014, 23:21

Ngày tải lên: 12/08/2014, 23:21