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Which of the following is the disadvantage in SPI?

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Which of the following is the disadvantage in SPI?

(a) Full duplex communication

(b) Push pull drivers

(c) Unidirectional signals

(d) More pins

The question was posed to me during a job interview.

My enquiry is from SPI Protocol in section Internet Principles of IOT

1 Answer

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Best answer
Correct option is (d) More pins

Easiest explanation: Requires more pins on IC package than I2C, even in the three wire variant.

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