Question

SPI is described as Asynchronous serial interface.

(a) True

(b) False

I have been asked this question in semester exam.

Question is from SPI Protocol in portion Internet Principles of IOT

Answer 1

The correct answer is (b) False.

Explanation:

SPI (Serial Peripheral Interface) is a synchronous serial communication protocol, not asynchronous. In an SPI communication, the data is transmitted between devices in a synchronized manner, using a clock signal (SCK) that both the master and slave devices rely on for timing. This synchronization ensures that both devices know when to send and receive data.

In contrast, an asynchronous communication protocol does not rely on a shared clock signal. Examples of asynchronous protocols include UART (Universal Asynchronous Receiver-Transmitter), where the timing of data transmission is managed by start and stop bits.

Thus, SPI is synchronous because it requires a clock signal for proper data transfer, and the statement "SPI is described as an Asynchronous serial interface" is false.