B.TECH - Semester 5 microprocessors and microcontrollers Question Paper 2020 (feb)
Practice authentic previous year university questions for better exam preparation.
- (b) With suitable examples, explain the sequence of steps in software development for 8051 microcontroller based system.
- (a) Draw and explain the architecture of a PIC16Fxx series microcontroller. ..... 10
- (b) Explain interrupt subsystem of ARM processors. ..... 10
- What are the benefits of ARM processors over 8051?
- 03 - MICROPROCESSORS AND MICROCONTROLLERS (AT) Time : 3 Hours Max. Marks : 100 Answer all questions. Each question carries 2 marks.
- List the flags and its functions in 8085 microprocessor.
- Distinguish between T-state, machine cycle and instruction cycle.
- What are the maskable interrupts in 8085. Arrange them in the decreasing order of priority.
- Compare microcontrollers and microprocessors.
- Write down any four addressing modes in 8051. Give examples for each.
- Describe the functions of bits in TMOD register.
- What are the modes supported by serial port of 8051?
- Explain the working of a stepper motor.
- Distinguish between interrupts and exceptions. Answer any one question from each module.
- (a) Draw the block diagram of 8085 microprocessor and explain the functions of each block? 10
- (b) Draw and explain the timing diagram of the instruction $\mathrm{MVI} \mathrm{A}, 25 \mathrm{H}$ ? 10
- (a) Write an assembly language program to find the sum of even numbers in a block of memory from 1000 H to 103 FH . Save the result in 1100 H and 1101 H .
- (b) With the help of necessary diagrams, explain how a 1 kilobyte memory is interfaced with 8085 microprocessor?
- (a) Explain the internal memory organization of an 8051 microcontroller.
- (b) Draw and explain the internal structure of four I/O ports of 8051 microcontroller? What are the differences between the ports?
- (a) Write an 8051 assembly language program to find the sum of ten 8 bit numbers stored in the internal RAM locations 40 H onwards? Store the result in 50 H .
- (b) With necessary diagrams explain the working of timer/counters in 8051 ?
- (a) With the help of necessary circuit diagrams describe the interfacing of an LCD module to 8051 microcontroller?
- (b) Explain in detail about the serial port of 8051 microcontrollers.
- (a) Draw the circuit diagram and explain the interfacing of an ADC to read an analogue voltage.
- (a) Draw the block diagram of an ARM architecture and explain. ..... 10
- (b) Explain any five branching instructions in ARM architecture. ..... 10
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