Serial Peripheral Interface

<communications, hardware>

(SPI) A serial interface in which a master device supplies clock pulses to exchanges data serially with a slave over two data wires (Master-Slave and Slave-Master). This term probably originated with Motorola in about 1979 with their first all-in-one microcontroller.

Last updated: 2003-07-13

Nearby terms:

Serial Line IPSerial Peripheral Interfaceserial portSerial Presence Detect

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