SPI MCQ’s

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

1. The concept of SPI is based on __________
a) two counters
b) four flip flops
c) two shift registers
d) four steady state machines

2. Writing on the trailing edge of the clock pulse and reading on the leading edge of the clock pulse is done when
a) CPHA is set
b) CPHA is reset
c) CPOL is set
d) CPOL is reset

3. Is SPI a full duplex technique?
a) yes
b) no
c) cant be said
d) depends on the conditions

4. When CPOL=1 then,
a) clock idles high between transfers
b) clock idles low between transfers
c) bit idles high between transfers
d) bit ideals low between transfers

5. SPI with the USI can be selected by ________
a) setting the USII2C bit in the register USICTL1
b) clearing the USII2C bit in the register USICTL1
c) setting the USIPE5–7 bits in USICTL0
d) clearing the USIPE5–7 bits in USICTL0

6. Transmission and reception are made at a time in SPI?
a) true
b) false
c) cant be said
d) depends on the conditions

7. Is CPKH and CPOL the same.
a) yes
b) no
c) cant be said
d) depends on the conditions

8. SCLK, SDO, and SDI are found ___________ on F20x3.
a) P1.0-2
b) P1.2-4
c) P1.4-6
d) P1.5-7

9. When the buffer is ________ the low power mode is__________
a) empty, reset
b) having one byte, reset
c) full, reset
d) empty, two

10. Falling edge of the SS pin denotes ________
a) end of the transfer
b) starts a new transfer
c) selects a new master
d) none of the mentioned

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