This set of MSP430 Micro-controller Multiple Choice Questions & Answers (MCQs) focuses on “Communication”.
1. What actually is a bit bagging?
a) it actually refers to the technique of assigning the bits with their inputs
b) a technique by which an MSP430 can communicate through hardware
c) a technique by which MSP430 can communicate through software
d) a technique through which conversion becomes possible
View Answer
Explanation: Bit bagging is the technique through which a processor can communicate to its associate partners when an appropriate hardware is not available for its purpose. This communication is made possible through the software.
2. SPI, I2C, Asynchronous serial communication are the means of communicating a processor with its associate partners?
a) true
b) false
c) cant be said
d) depends on the conditions
View Answer
Explanation: SPI, I2C, Asynchronous serial communication are the means for the processor by which communication is made possible.
3. All digital communications don’t require any clock.
a) true
b) false
c) cant be said
d) depends on the conditions
View Answer
Explanation: Clock is the prior need for any communication to occur. This is because synchronization is maintained with the help of a clock.
4. SPI needs______ wires than I2C?
a) less
b) same
c) more
d) depends on the conditions
View Answer
Explanation: In SPI, there is no control of transmission in software—no addresses or acknowledgment, that’s why it requires more amount of wires.
5. USI handles _________
a) SPI
b) I2C
c) SPI & I2C
d) None of the mentioned
View Answer
Explanation: USI(Universal Serial Interface) supports both the types of synchronous communication i.e. SPI and I2C.
6. USCI consists of _________
a) one channel
b) two channels
c) three channels
d) four channels
View Answer
Explanation: USCI consists of mainly two channels, A and B. These are largely independent but share a few registers and interrupt vectors.
7. LIN is enabled in which of the following channels?
a) A
b) B
c) C
d) D
View Answer
Explanation: Channel A is the asynchronous receiver/ transmitter channel. It can detect the baud rate of an incoming signal, which enables its use on a local interconnect network (LIN).
8. Can one device have more than one USC interfaces?
a) yes
b) no
c) depends on the conditions
d) cant be said
View Answer
Explanation: Yes, one device can have more than one USC interfaces. There is a small difference because the interrupt flags and enable bits for the “0” modules are in a special function registers IFG2 and IE2, while those for the “1” modules are in their own registers, UC1IFG and UC1IE.
9. Which of the following conditions is more difficult to attain?
a) synchronous masters
b) synchronous slaves
c) asynchronous masters
d) asynchronous slaves
View Answer
Explanation: Synchronous slaves are the most difficult to attain because the problem is that the slave must react quickly when a clock transition arrives from the master.
10. Timer_A is used in _________
a) SPI
b) I2C
c) Asynchronous Serial Communication
d) All of the mentioned
View Answer
Explanation: Timer_A is used in the Asynchronous Serial Communication.
Sanfoundry Global Education & Learning Series – Microcontroller.
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