JNTU
JNTU B.Tech IV MICROPROCESSORS AND MICROCONTROLLERS Previous Question Paper (June - 2024 - R16)
Note: i) Question paper consists of Part A, Part B.
ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions.
iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Name the different segments available in 8086 µp.
Answer
The 8086 microprocessor uses a segmented memory architecture consisting of four primary segments, each 64 KB in size:
- Code Segment (CS): Contains the program instructions.
- Data Segment (DS): Contains the program data.
- Stack Segment (SS): Used for stack operations.
- Extra Segment (ES): Used for additional data storage.
Write any three branch and call instructions.
Answer
Three common branch and call instructions in 8086 are:
- JMP (Jump): Unconditional transfer of control to a specified target address.
- CALL (Call Procedure): Transfers control to a subroutine and pushes the return address onto the stack.
- RET (Return): Returns control from a subroutine to the main program by popping the return address from the stack.
Explain PUSH and POP instructions in 8051.
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Explain the memory organization of 8051.
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What is the need of DMA?
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Write a short note on SPI bus.
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What is exception?
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Write the role of barrel shifter in ARM.
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List the applications of DSP processors.
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Explain the priority concept in Cortex processor.
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Part B
What is Interrupt? Explain the Interrupts of 8086.
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Define the macro? Explain the working of macros in 8086 with one example.
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Name the different addressing modes of 8086 and explain them with suitable example.
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Explain the TCON special function register with a diagram in 8051 microcontroller.
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Explain the serial communication interrupts.
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How does 8051 differentiate between the external and internal program memory.
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Discuss the I/O Ports of 8051.
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Draw the 8251 USART architecture and explain its operation.
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Draw a neat sketch of DAC to be interfaced with 8051 microcontroller.
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Explain about on board communication Interfaces.
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Write short notes on serial communication standards.
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Discuss the main features of the ARM Processor.
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Explain the concept of thumb instructions in ARM processor.
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List the various modes of ARM processor and explain any two modes of it.
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Draw the functional block diagram of OMAP Processor and explain working of all blocks available in it.
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Explain the main features of the OMAP Processor.
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Discuss about memory access attributes of OMAP processor.
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