ECET365 Week 3 Quiz

1.

Question :

(TCO #3) Which interrupt is non-maskable?

Student Answer:

Software interrupt (SWI)

Interrupt from a device connected to IRQ pin of HCS12 microcontroller

Both A and B

Interrupt by multiple devices connected to IRQ pin of HCS12 microcontroller

Comments:

2.

Question :

(TCO #3) Which of the following interrupts has the highest priority?

Student Answer:

TCNT timer overflow

SCI0

ATD0

ATD1

Comments:

3.

Question :

(TCO #3) Which selection is connected to the reset module in the HCS12 microcontroller?

Student Answer:

Reset pin

ADC0

ADC1

None of the above

Comments:

4.

Question :

(TCO #3) Which bit can mask a maskable interrupt?

Student Answer:

S bit

Z bit

N bit

None of the above

Comments:

5.

Question :

(TCO #3) In the HCS12 microcontroller, the address range 0xFFFE – 0xFFFF in the interrupt vector table is assigned to which of the following?

Student Answer:

Clock monitor fail reset

ATD0

Reset

COP failure reset

Comments:

6.

Question :

(TCO #3) Freescale utilizes BDM to _____.

Student Answer:

check each instruction of a program individually

reset CPU by setting IRQ pin to high-level logic

check changes in memory and CPU register for each instruction execution

Both A and C

Comments:

7.

Question :

(TCO #3) Watch dog timer is a utility that _____.

Student Answer:

can reset the microcontroller whenever a program locks up.

can catch errors due to memory corruption

makes sure that a program does go to an unintentional infinite loop sequence

Both A and B

Comments:

8.

Question :

(TCO #3) When an interrupt occurs, _____.

Student Answer:

in one stage, the contents of the CPU move to RAM memory

the CPU finishes executing its current instruction before it starts running an interrupt thread

all interrrupts will be ignored if the I bit is zero

Both A and B

Comments:

9.

Question :

(TCO #3) Which combination is an appropriate way of setting up the PORTJ interrupt to enabled?

Student Answer:

Pin I of CCR = 0

Pin I of CCR = 1

Pin I of CCR = 1 and PIEJ7 = 1

Pin I of CCR = 0 and PIEJ6 = 0

Comments:

10.

Question :

(TCO #3) Which of the following interrupts has the highest priority immediately after a microcontroller reset?

Student Answer:

Reset

XIRQ

COP

All have the same level of priority.

Photos

ECET365 Week 3 Quiz
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