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BE - SEMESTER- V (New) EXAMINATION - WINTER 2019
Subject Code: 2150907 Date: 04/12/2019
Subject Name: Microprocessor and Microcontroller Architecture & Interfacing
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) List four major differences between a microprocessor and microcontroller. 03
(b) Only draw pin diagram of 8085 Microprocessor. 04
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(c) Explain the architecture of 8085 microprocessor with functional block diagram. 07
Q.2 (a) Explain (1) ALU (2)INTR (3) ALE with respect to 8085 microprocessor. 03
(b) Explain basic differences (1) Van neumann and Harvard architecture (2) CISC and RISC 04
(c) What is multiplexing? Explain multiplexing for address and data bus for 8085 microprocessor with neat diagram. 07
OR
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(c) Explain editor, assembler, compiler and linker. 07
Q.3 (a) Explain TOMD in detail for 8051 microcontroller. 03
(b) Draw and explain memory organization of 8051 microcontroller. 04
(c) Draw and explain the functional block diagram of 8051 microcontroller. 07
OR
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Q.3 (a) Draw only pin diagram of 8051 microcontroller. 03
(b) Explain IE and PSW SFR of 8051 microcontroller. 04
(c) Write detail functional work of listed pins in 8051 (1)ALE / PROG (2) PSEN (3)RXD & TXD (4) RD & WR 07
Q.4 (a) What is jump range? Explain short absolute and long absolute jump using appropriate instruction. 03
(b) Explain POP and PUSH instructions w.r.t. 8051. 04
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(c) Explain various addressing modes of 8051 instructions with suitable example 07
OR
Q.4 (a) Compare MOVX and MOVC 03
(b) Explain any two-bit level instruction with example. 04
(c) Write an assembly language program to convert 8 bit two digit BCD number system into hexadecimal number system. 07
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Q.5 (a) Discuss the different types of interrupts available with 8051, state their priorities. 03
(b) Write an 8051 assembly or embedded C program to create frequency of 2.5 KHz on P2.5. use timer 0 in mode 2 to create delay. Assume crystal frequency =11.0592 MHz. 04
(c) Explain the interfacing of multiple 7 segment display. 07
OR
Q.5 (a) Write short note on “interfacing of A/D converter with 8051 microntroller. 03
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(b) Only draw 4 x 4 matrix keyboard connection diagram interfacing with 8051 microcontroller. 04
(c) Discuss how the speed and direction of DC motor can be controlled using microcontroller. 07
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