EE2354 Microprocessors and Microcontrollers April May 2015 Question Paper

Anna University Chennai- EE6502 Microprocessor and Microcontroller Previous Year Question Papers Collection April May 2015
Question Paper Code :
B.E./B.Tech. DEGREE EXAMINATION, April May 2015
Fifth Semester in R-2013 / Sixth Semester R-2008
Electrical and Electronics Engineering
EE2354 Microprocessors and Microcontrollers
(Regulation 2008/2010)
Time : Three hours
Maximum : 100 marks

Note: New Subject Code of the Question Paper in R-2013 is EE6502

Answer ALL questions

Part A

1. What is the function of ALE in 8085 microprocessor?

2. What is the maximum number of byte of memory addressable by the 8086 microprocessor?

3. What is the function of Rotate instructions? Give an example.

4. How is time delay generated using subroutines?

5. What are the internal Registers available in 8259 PIC?

6. Distinguish between synchronous and asynchronous transmission.

7. Write down the instruction format in 8051 microcontroller.

8. What is the purpose of timing diagram in 8051 microcontroller?

9. How pulse is generated using 8051 microcontroller?

10. What are the control signals from 8051 microcontroller required for Washing machine control?

PART B

11. (a) (1). Explain with a neat diagram, the hardware architecture of 8085 Microprocessor. (8)

 (2). Describe the interrupt structure of 8085 Microprocessor from the order their priority. (8)

 OR

(b). (1). Describe the data transfer concepts in 8086 Microprocessor. (8)

 (2). Draw the timing diagram of memory READ and WRITE operations in 8086 Microprocessor. (8)

 12. (a). (1). Describe the 8085 Assembly Language Program for the Loop structure with counting of 10 numbers. (8)

 (2). Describe the different addressing modes of 8085 Microprocessor. (8)

 OR

(b). (1). Write an assembly language program using 8085 instructions to find the biggest number in a block of data stored in the memory locations from 70H-7FH. (8)

 (2). Write short notes on Look up table and its usage. (8)

13. (a). (1). With a neat functional block diagram, explain the functions of 8255 PPI. (8)

 (2). With a neat functional block diagram, explain the functions of 8279 keyboard controller. (8)

 OR

 (b). (1). With a neat functional block diagram, explain the function of 8259 PIC. (8)

 (2). Explain with a neat sketch, the A/D converter interfacing with 8085 Microprocessor. (8)

14. (a).(1). With a neat functional block diagram, the 8051 Microcontroller hardware. (8)

 (2). Describe the interrupt structure of 8051 Microcontroller. (8)

 OR

 (b). (1). Explain the various I/O ports and its functions of 8051 Microcontroller. (8)

 (2). Explain how the internal timers are used to generate time delay by using 8051 Microcontroller (8)

15. (a). (1). Write an 8051 Assembly Language Program to copy 10 bytes of data stored from location

30H to another location starting from 50H. (8)

 (2). Explain with a neat diagram the stepper motor control using 8051 Microcontroller. (8)

 OR

 (b). (1). Explain with a neat diagram, a 4×4 keyboard interfacing with 8051 Microcontroller. (8)

 (2). Describe with a neat diagram, the Washing machine control using 8051 Microcontroller. (8)

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