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SPR No.: Year/Dept: Date:  

Time:

Marks(Answer All the Questions)

PART A - 2 Mark Qs (10x2=20)1. Give the salient features of the 8279.

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2. Draw the block diagram of ADC IC.3. What is USART? And give its applications.4. Define XTAL1 and XTAL25. What is the function of DPTR register?6. Draw the format of PSW of 8051.7. Write the various interrupts supported by 8051 with priority level and vector address8. Draw the pin diagram of IC DS13079. List the addressing modes of 8051

10. Draw the block diagram for DC motor speed controlPART B - 16 Mark Qs (5x16=80)

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(OR)11. b Explain about the ADC interface with neat diagrams. 16

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(OR)12. b List the various Instruction available in 8051 microcontroller. 16

13. a List out the various addressing modes of 8051 and explain them briefly. 16

(OR)13. b i. Explain the memory structure of 8051. ii. Explain the I/O port structure of 8051

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16(OR)

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15. a With neat diagrams explain the RTC Interfacing using I2C Standard. 16

(OR)15. b Explain briefly about the speed control of DC motor using 8086. 16

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