Question

28. Which among the below
mentioned sequence of program
instructions represent the correct
chronological order for the
generation of 2kHz square wave
frequency? 1. SETB TRO 2. MOV TLO,
# 06H 3. MOV THO, # 06H4. MOV
TMOD, 0000 0010 B5. CPL P1.06.
CLR P1.07. LOOP JNB TFO LOOP *​

Answer 1

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Programming Confined to Timer Modes - MCQs with Answers

Topics >>Electronics and Communication Engineering >>Microcontrollers & Applications - 8051 Architecture -06/12/15

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Programming Confined to Timer Modes - MCQs with Answers

Q1. Consider the below generated program segment for initializing Timer 1 in Mode 1 operation :

MOV SP, # 54 H

MOV TMOD ,# 0010 0000 C

SET C ET1

SETC TR0

SJMP $

Which among the below mentioned program segments represent the correct code ?

a. MOV SP, # 54 H

MOV TCON ,# 0010 0000 C

SETC ET1

SETC TR0

SJMP $

b. MOV SP, # 54H

MOV TMOD ,# 0010 0000 C

SETC ET0

SETC TR0

SJMP $

c. MOV SP, # 54 H

MOV TMOD ,# 0010 0000 C

SETC ET1

SETC TR1

SETC EA

SJMP $

d. MOV SP, # 54 H

MOV TMOD ,# 0010 0000 C

SETC ET0

SETC TR1

SETC EA

SJMP $

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