It was introduced in 1985 for use with the M68HC11 microcontroller. SPI stands for Serial Peripheral Interface and was developed by Motorola. This module is dedicated to SPI basics theory, so no hardware is necessary at this point. No schematic is associated with this module. Atmel AppNote: Setup And Use of The SPI.Here are some additional resources for those interested in obtaining greater technical detail… This is the first module describing SPI, consequently, reading through the previous sections will be helpful for the less experienced, but are not necessarily essential. Determine how SPI components are selected for communication.Define the four signaling lines in a SPI system. Understand why pull up resistors are not needed.Understand how components on the SPI bus are connected.This is just an overview, with the most important aspects receiving their own dedicated modules to provide greater detail. This module begins our discussion of SPI basics by introducing the theory, structure and signalling of the SPI serial communications bus.
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