Devry ECET365 Week 3 Quiz Latest
ECET365 Embedded Microprocessor Systems
Week 3 Quiz
1. Question : (TCO #3) Which interrupt is non-maskable?
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
2. Question : (TCO #3) Which of the following interrupts has the highest priority?
TCNT timer overflow
SCI0
ATD0
ATD1
3. Question : (TCO #3) Which selection is connected to the reset module in the HCS12 microcontroller?
Reset pin
ADC0
ADC1
None of the above
4. Question : (TCO #3) Which bit can mask a maskable interrupt?
S bit
Z bit
N bit
None of the above
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?
Clock monitor fail reset
ATD0
Reset
COP failure reset
6. Question : (TCO #3) Freescale utilizes BDM to _____.
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
7. Question : (TCO #3) Watch dog timer is a utility that _____.
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
8. Question : (TCO #3) When an interrupt occurs, _____.
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
9. Question : (TCO #3) Which combination is an appropriate way of setting up the PORTJ interrupt to enabled?
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
10. Question : (TCO #3) Which of the following interrupts has the highest priority immediately after a microcontroller reset?
Reset
XIRQ
COP
All have the same level of priority.

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