USN 17-IA-I~ I 2-12-11:-1 cl 61Ll)I
-~ §" BEC405A
Fourth Semester B.E./B.Tech. Degree Exaffl..f3,n, June/July 2024
Mlcrocontrol~~
Time: 3 hrs. ~ Max. Marks: 100
Note: 1. Answer any FIVE full questions, chod)vJ;.VNE full question fromt:lrnh module.
2. M: Marks, L: Bloom's level, C: Co~t11Itcomes. ~'V-
.
Modul~l - M L
, C
Q.l a. Bring out the difference between Mic:tjprocessor and Microco11q~Her.
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6 L2 cot
b. With a neat Architecture Cf~ ~.in, ,
explain the Archite~~e of 8051 10 L2 cot
Microcontro lier.
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C. Explain: (i) RST ~~~ff Pins of 8051 ;y 4 Lt cot
~
OR ~r
Q.2 a. Differentiate bet~~1SC and RISC.
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~
6 L2 cot
b. With a neat cfiagfam, explain the I~cri)r Memory Structure and 10 L2 COi
Programmin~Nael of 8051 Microcontroll .
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c. List out ~p1~l-features of8051 Mi~fntroller. 4 L2 COi
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Q.3 a. Define Addressing Mode. E1Ilin different aocfo~i g modes ~·th 10 L2 CO2
example. ~ '!-j
14
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b. Write an ALP to add tw~it numbers load~'ul'R1Rii and R:i~-~re 10 L3 CO2
the result in ~Rs and Rt MSB to LSB. ~ • ,
Q.4 a. Defme Stack.
~-
~Jl
_,,.
.,, ~
OR ~ ~- ~ ~
A
_v
the operation ~ k using Stack ~'niter, PUSH 10 L2 CO2
and POP Instru~t s. ~ __ ,
b. Write an~ f'o find largest of_~JI_,mbers.
~ 10 L3 CO2
Q.S
~"'Y
Explain :((0 TMOD
<l ~~dule-3 xv
a. ~~ON register ~~Ort. 10 L2 C03
h
b.
~l on Pin Pl.2. ~
1.
e XTAL = 22 MI-f \Write an ALP ~""eperate a square of frequency 10 L2 C03
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~~
"Explain : (i) S~~register QR~
Q.6 a. (ii) Jm~hance of TI Flag 10 L2 C03
b. Write a C prorsiin to transfer "YE$" serially at 9600 baud rate, 8 bit data, 10 L3 C03
I stop bit, do t 1s continuouJ.ll., '
1 .VModule-4
Q.7 a. Define Interrupt. List the s~s involved in Executing an Interrupt. 10 L2 C04
>
b. Explain Interrupt ~~r table of 8051 Microcontroller, s L2 C04
c. Explain Interrup~l,le register. s L2 C04
Q.8 a.
. y
OR
Explain I~upt Control used in 8051. 10 L2 C04
b. Explain~steps involved in programming serial communication Interrupt. s L2 C04
I of2
BEC40SA
c. Explain how multiple Interrupts are handled in 8051. 5 L2 C04
Module-5
Q.9 a. Explain DAC Interface with a neat diagram a o write a program to 10 L3 C05
generate staircase waveform.
•
b. With a neat diagram, write a program t<rlit~face Stepper Motor t~~ 10 L3 COS
Microcontro Iler. '-J ~
•
Q.10 a. Explain the Interfacing of DC g C programming. " 10 L3 C05
b. With a neat diagram,
Microcontro Iler.
p to Interface L
,. to 8051 10 L3 cos
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