SPI Protocol Overview

SPI (Serial Peripheral Interface) is a synchronous, full-duplex communication protocol used for high-speed data exchange over short distances. It follows a master–slave architecture with four primary signals:

Bits are shifted out on MOSI and shifted in on MISO on each clock edge, according to the configured clock polarity (CPOL) and phase (CPHA).


Revision #1
Created 1 May 2025 18:50:31 by Caroline
Updated 1 May 2025 18:51:18 by Caroline