Lec14SPI - Lecture 14 Serial Peripheral Interface(SPI...

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ECE 471 14-SCI-1 Lecture 14. Serial Peripheral Interface (SPI) Introduction to SPI Configuration registers. Application example
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ECE 471 14-SCI-2 Serial Peripheral Interface (SPI) SPI is an synchronous serial communication system Synchronous means that the sender and receiver have a common clock. It does not need start or stop bits for synchronization The send and receiver each has its independent internal baud rate generation circuitry but sender’s clock signal drives both circuits. The send and receiver each has an SPI transmitter and a SPI receiver.
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ECE 471 14-SCI-3 Serial peripheral interface (SPI) Allows the MCU to communicate synchronously with peripheral devices and other microprocessors. Can operate as a master or as a slave. Capable of inter-processor communications in a multiple master system. When the SPI is enabled, all pins that are defined by the configuration as inputs will be inputs regardless of the state of the DDRS bits for those pins.
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