Low Power Modes MCQ’s

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This set of Microcontroller Multiple Choice Questions & Answers (MCQs) focuses on “Low Power Modes”.

1. Which of the following are the low power modes?
a) LPM0
b) LPM3
c) LPM4
d) All of the mentioned

2. Which of the following modes is also known as the RAM retention mode?
a) LPM0
b) LPM3
c) LPM4
d) All of the mentioned

3. There are how many MSP430’s low power modes available in the chip?
a) two
b) three
c) four
d) five

4. Waking a device simply means that switching that device’s operation from a low power mode to an active mode.
a) true
b) false
c) cant be said
d) depends on the conditions

5. Which of the following basic clock modules supplies clock signals to the MSP430?
a) ACLK
b) MCLK
c) SMCLK
d) All of the mentioned

6. More power can be saved by using low_power mode 0 than low_power mode 3.
a) true
b) false
c) cant be said
d) depends on the conditions

7. When an interrupt is accepted, the contents of the status register are ___________
a) set
b) reset
c) remains the same
d) cant be said

8. _ _low_ power_mode_0() states the processor to __________
a) enable the interrupt
b) disable the interrupt
c) nothing
d) to go in an active mode

9. _BIC_SR_IRQ() is used to _______________
a) set the particular bits of the SR
b) reset the particular bits of the SR
c) any of the above mentioned depending on the conditions
d) none of the mentioned

10. The only clock that runs in the LPM3 is the ___________
a) MCLK
b) ACLK
c) CLK
d) None of the mentioned

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