M. Sc Electronics (Communication Science) (Semester II)
(CBCS) Examination, 2017
ADVANCED MICROCONTROLLERS wateriI
Day Date: Monday, 24-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. Questions NO.1 and 2 are Compulsory.
Answer any three questions from Q.NO.3 to Q.NO.7
All questions carry equal marks.
Q.1 Objective Questions. 14
Choose the correct alternative given in the bracket. 6
In data indirect with displacement mode, the maximum
displacement added to the pointer is bit.
2 6 8 16
For LPM instruction, constant byte address is specified by
register.
a)X Y z Any of these x
The AVR ALU does not support arithmetic and logic operation
between
a)Between a constant and a register Registers
Between a memory and a register Both a and c
ARM920Tsupports address.
Virtual Address Modified Virtual Address
Physical Address All of these
register contains the control bits of the ARM920T.
Register 0 Register 1 Register 2 Register 3
The ARM9TDMI has a stage pipeline design.
a)3 4 5 7
State True/False 08
Most of AVR instructions have fixed 16-bit format.
AVR instruction SNF is used to set the negative flag.
Atmel's AVR microcontroller do not use pipeline.
AVR External Reset is generated by a high level on the RESET
pin.
Internally, the ARM920Tclocked by signal BCLK.
SWI instruction allows a user mode program to request
privileged operations from supervisor mode.
Increasing the block size of cache memory increases
performance.
Interrupt stops execution of the instruction in middle, while it is
being executed.
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Q.2 Write short notes: 14
Explain any two program control instructions of AVR with suitable
examples.
05
Give RISC features of ARM. 05
How to switch between ARM and THUMB modes? 04
Q.3 Give a brief overview of AVR ports. Explain the steps in configuring
port as an
10
input and
output 08
Write a short note on AVR flags, 06
Q.4 Explain memory organization of AVR microcontroller. With a neat
diagram external SRAM interfacing with AVR microcontroller.
10
Explain LPM instruction of AVR. 04
Q.5 Explain interrupt system of AVR. 08
What is pipeline? Explain ARM pipeline. 06
Q.6 With a neat diagram explain ARM processor modes and associated
register set.
08
Write a short note on software interrupt in ARM. 06
Q.7 Explain 'Conditional Execution' feature of ARM. 08
Give differences in ARM and THUMB modes of operation. 06