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Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to choose the device you wish to talk to.
Serial peripheral interface (SPI) is one of the most widely used interfaces between microcontroller and peripheral ICs such as sensors, ADCs, DACs, shift registers, SRAM, and others.
This article provides a brief description of the SPI interface followed by an introduction to Analog Devices’ SPI enabled switches and muxes, and how they help reduce the number of digital GPIOs in system board design. SPI is a synchronous, full duplex main-subnode-based interface.
n take an in-depth look at SPI timing from an example datasheet. Using the ADS1118 precision ADC, two table. show the Timing Requirements and the Switching Characteristics. Typically, timing requirements show setup and hold times for the SPI communication.
MSP430’s peripheral communication modules helps you to reduce CPU loading. Be aware about the initialization sequence of USART and USCI modules (follow the recommendations of the User’s Guides) Detailed module descriptions can be found in the MSP430 User’s Guides.
The most common serial interface used in precision data converters is a standard known as Serial Peripheral Interface abbreviated as SPI. There are two control lines for SPI. The controller, usually a microcontroller or DSP, controls a peripheral select and the serial clock used for data synchronization.
The simplified SPI block diagram shows its basic control mechanisms and functions. There are four I/O signals associated with the SPI peripheral. All of the data passes through receive and transmit buffers via their specific interfaces. The control block features are enabled or disabled depending on the configuration.
