M.Sc. (Semester (CBCS) Examination Oct/Nov-2017
Electronics
ADVANCED MICROCONTROLLERS
Day Date: Thursday, 23-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Answer any five questions.
Questions 1 and 2 are compulsory.
Answer any three questions from Q.3 to Q.7.
Figure to the right indicates full marks.
Q.1 Choose the alternatives given below. 08
Reset pin of PIC 16F877 microcontroller is
Active Low Active High
High to Low Low to High
Each Port pin of AVR atmega8 Microcontroller sink or source mA.
10 20
15 25
PIC 16F877 microcontroller has bytes of Data Memory (RAM).
36 x8 368x8
38x8 368 x14
In AVR register forms 16 bit X register.
R26 R27 R28 R29
R30 R31 None of these
PIC microcontroller is Reduced Instruction Set
Controller Computer
Both a b None of these
is used the LPM instruction of AVR Microcontroller.
R0 R1
R2 R3
Interrupt of PIC microcontroller Interrupt on overflow from
F5h to 00h F0h to 00h
FFh to 00h None of these
Resister used to enable or disable external interrupts.
GIMSK GMSK
ADMUX None of these
State True or false. 06
ADFM bit of ADCON1 is used for Result Format Selection.
PIC 16F877 has 35 two word instructions.
AVR atmega8 microcontroller has 4 resister banks.
To select Bank 2 and 3 of PIC microcontroller at a time, the IRP bit of status
register is set.
AVR atmega8 microcontroller has 13 general purpose registers.
PORTB of PIC microcontroller has a weak internal pull-up.
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SLR-MJ-350
Q.2 Answer any two of the following. 10
Write note on Addressing Modes of AVR atmega8.
Write note on PWM mode of PIC microcontroller.
Write note on resister bank of PIC 16F877 microcontroller.
Compare LP and ST instructions of AVR microcontroller. 04
Q.3 Write a note on Architecture of AVR microcontroller. 08
Explain in detail arithmetic and data transfer instructions of PIC
microcontroller.
06
Q.4 Explain in detail interfacing of LCD to PIC microcontroller. 08
Write a note on Timer 1 of AVR microcontroller. 06
Q.5 Explain compare and capture mode of PIC microcontroller. 08
Write note on features of AVR microcontroller. 06
Q.6 Write a note WDT mode of PIC microcontroller. 08
Explain firing of thyristor using PIC 16F877 microcontroller. 06
Q.7 What do you mean by Power on reset and Brown out reset? 08
Write note on clock and reset circuit of AVR microcontroller. 06