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SPPU Electrical Engineering (Semester 4)
Fundamentals of Microprocessor & Microcontroller
December 2016
Fundamentals of Microprocessor & Microcontroller
December 2016
Solve any one question fromQ.1(a,b) and Q.2(a,b)
1(a)
Explain the function of register stack pointer and instruction register.
6 M
1(b)
Explain the steps taken by 8085 C.P.U. in response to a valid CALL instruction.
6 M
2(a)
Explain with an example Direct and Register indirect addressing modes of 8085.
6 M
2(b)
Compute the total no. of bits in memories which are organized as:
1) 8k× 1
2) 4k×8
3) 1k×4.
1) 8k× 1
2) 4k×8
3) 1k×4.
6 M
Solve any one question fromQ3(a,b) and Q.4(a,b)
3(a)
8255 is interfaced with 8255 such that Contol word register of 8255 has an address of 83 H. Write a program to set PC0 bit of 8255 in BSR mode.
6 M
3(b)
Explain the functions of following pins of 8051:
1) EA
2) PSEN
3) RST.
1) EA
2) PSEN
3) RST.
6 M
4(a)
Draw the TMOD register and explain the individual bits of the register in detail.
6 M
4(b)
Explain functions of following pins of ADC 0809:
1) SOC
2) EOC
3) ALE.
1) SOC
2) EOC
3) ALE.
6 M
Solve any one question fromQ5(a,b) and Q.6(a,b)
5(a)
Explain the MOVC anf MOVX instruction in detail.
6 M
5(b)
Write a program to transfer a letter 'S' serially and continuously at a baud rate of 4800. Use serial port in Mode 1. Assume crystal frequency as 11.0592 Mhz.
7 M
6(a)
Write an assembly language program for 8051 microcontroller to find one's complement of the number stored in register a location 30H and store the result in R0 of Bank 0.
6 M
6(b)
Write a short note on interrupt structure of 8051.
7 M
Solve any one question fromQ.7(a,b) and Q.8(a,b)
7(a)
With a neat diagram and flow chart, explain measurement of speed of a DC motor using 80511 microcontroller.
6 M
7(b)
With a neat diagram and flowchart explain power factor measurement using 8085.
7 M
8(a)
A stepper motor is interfaced with 8051 through a driver card . The motor is controlled through most significant 4 bits of port 1. The step angle of the motor is 1.8 degrees. Write a program to run the motor in anticlockwise direction continuously.
6 M
8(b)
With a neat diagram explain temperature measurement using 8051 microcontroller.
7 M
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