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K S R Institute For Engineering and Technology

1. The document contains questions related to PIC microcontrollers. It asks about the comparison between 8051 and PIC microcontrollers, the status register of PIC18, addressing modes, timer clock frequencies, interrupt prioritization, and programming in assembly language. 2. It also contains questions on timer modes, memory organization, register functions, and using timers to generate square waves. Block diagrams and programming steps are requested. 3. The questions cover a wide range of topics related to PIC18 architecture, programming, timers, interrupts, addressing modes, and assembly language.

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Ryan Miller
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59 views2 pages

K S R Institute For Engineering and Technology

1. The document contains questions related to PIC microcontrollers. It asks about the comparison between 8051 and PIC microcontrollers, the status register of PIC18, addressing modes, timer clock frequencies, interrupt prioritization, and programming in assembly language. 2. It also contains questions on timer modes, memory organization, register functions, and using timers to generate square waves. Block diagrams and programming steps are requested. 3. The questions cover a wide range of topics related to PIC18 architecture, programming, timers, interrupts, addressing modes, and assembly language.

Uploaded by

Ryan Miller
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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ANSWER ALL QUESTIONS

PART-A (10*2=20)
1. Write the comparison between 8051 series and PIC microcontroller.
2. Give the best definition for R!".
#. $ame and e%plain abo&t the PIC 18 stat&s re'ister.
(. )ention the bit pattern for 0C!$ and I$C!$ re'ister and write down an* one of
pattern f&nction.
5. +ind the timer,s cloc- fre.&enc* and its period for vario&s PIC 18 s*stems/ with the
followin' cr*stal fre.&encies. 0ss&me that a prescalar of 112( is &sed.
3a4 5 10 )67 3b4 5 12 )67
2. "how the stat&s of the C/ 8C/ and 9 fla's of the stat&s re'ister after the followin'
instr&ction and e%plain the reason.
a4 )!:;W #86 b4 )!:;W <C6 c4 )!:;W 886
088;W 2+6 088;W 2(6 088;W <#6
=. What is di'ital data o&tp&t>
8. Write the str&ct&re of an assembl* lan'&a'e instr&ction.
<. ;ist o&t the different t*pes of addressin' modes with an e%ample.
10. ;ist o&t the ma?or re'ister associated with the @0R.
PART-B (5*16=80)
11. a4 i4 A%plain the f&nctional bloc- dia'ram of PIC18. 384
ii4 8raw the (0B pin 8IP of PIC18. 384

3or4
b4 A%plain abo&t ;C8 di'ital cloc-Cthermometer &sin' f&llR!". 3124
12. a4 i4 With instr&ction e%plain the different addressin' modes of PIC18. 3104
ii4 Write a C18 pro'ram to to''le all bits of ports D 50/000 times. 324
3or4
b4 A%plain the operation of different t*pes of instr&ction sets with an e%ample. 3124
1#. a4 i4 A%plain the pro'ram R!) and R0) allocation in C18. 3124
Re' $o
K S R INSTITUTE FOR ENGINEERING AND TECNOLOG!
"#E# $ "#TEC DEGREE E%A"INATIONS - OCTOBER 2012
I&'()&*+ A,,(,,-(&' '(,' - II
F.),' S(-(,'()
T.-( / 0 123), "*4"*)5, / 100
S367(8' / ET 9212 ".8)282&')2++() B*,(: S;,'(- D(,.<&
ii4 0ss&me E0; 5 10)67. find the cloc- period fed into timer0 if a prescaler option
of 252 is chosen. 3(4
3or4
b4 3i4 A%plain timer0 12Bbit mode with bloc- dia'ram and write steps to pro'ram timer0
in 12Bbit mode. 384
3ii4 Write a pro'ram to creatin' a s.&are wave of 50F d&t* c*cle 3with e.&al portions
hi'h and low4 on P!RD.5 bit. imer0 is &sed to 'enerate the timer dela*. 384
1(. a4 i4 8raw the timer 1 with proper bloc- dia'ram. 3(4
ii4 A%plain the memor* or'ani7ation of PIC18 microcontroller. 3124
3or4
b4 i4 A%plain the ma?or re'ister associated with the @0R. 384

ii4 8isc&ss the 08C section of the PIC18 chip. 384
15. a4 A%plain the PIC18 interr&pts s*stem and e%plain how the interr&pts are prioriti7ed. 3124
3or4
b4 i4 A%plain abo&t an* one t*pe of )""P mod&le s*stem. 384
ii4 With proper bloc- dia'ram e%plain the operation of compare and capt&re mode. 384
P)(=*)(: 6; A==)2>(: 6;
("#A STEPENRA?) (OD$EEE)
(AP$EEE)

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