T.E. (E & TC)
(2015 Pattern) (Semester – I)
Time : 2½ Hours
Max. Marks : 70
Instructions to the candidates:
1) Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6 and Q.7 or Q.8.
2) Neat diagrams must be drawn wherever necessary.
3) Figures to the right side indicate full marks.
4) Assume Suitable data if necessary.
5) Use of Calculator is allowed.
Q1) a) Explain IE and IP register of 8051 with their priorities. [6M]
b) Interface 8 bit LCD with 8051 to display SPPU on first line and PUNE on second line. [8M]
c) Explain Memory organization of 8051. [6M]
Q2) a) Explain instruction ADD,ANL and DJNZ. [6M]
b) Explain interface of DAC with 8051. Write a program to generate triangular wave. [8M]
c) Write short note on IDE and Logic Analyser. [6M]
Q3) a) Explain the data memory organization of PIC, comment on bank select register and access banks. [8M]
b) State different power management modes and explain idle and sleep mode.[8M]
Q4) a) Explain RESET operation of PIC18F458 in detail. [8M]
b) What are the various oscillator options? How can it be selected using Config register. [8M]
Q5) a) Explain the concept of PWM used in PIC 18F458 controller with example. [9M]
b) Explain different ports of PIC l8Fxx microcontroller along with SFR.[9M]
Q6) a) Interface 4X4 Keypad to PIC 18Fxx controller and explain. Write embedded C program to display key press? [9M]
b) State the programming steps for generation of time delay using Timer.[9M]
Q7) a) Draw and explain MSSP structure of PIC18F458. [8M]
b) Explain Rs-232 and RS-485 Protocol in details. [8M]
Q8) a) Explain I2C Protocol in details and compare I2C, RS-232 and RS-485 protocols. [8M]
b) Explain the step wise procedure and design methodology of PIC test board. [8M]