Difference Between I2c And Spi Protocol Pdf
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The Serial Peripheral Interface SPI is a synchronous serial communication interface specification used for short-distance communication, primarily in embedded systems. The interface was developed by Motorola in the mids and has become a de facto standard. Typical applications include Secure Digital cards and liquid crystal displays.
Understanding the Difference Between UART vs SPI
SPI Serial Peripheral Interface is an interface bus commonly used for communication with flash memory, sensors, real-time clocks RTCs , analog-to-digital converters, and more. The Serial Peripheral Interface SPI bus was developed by Motorola to provide full-duplex synchronous serial communication between master and slave devices. Figure 1. The SPI interface defines no protocol for data exchange, limiting overhead and allowing for high speed data streaming. Mode 0 is by far the most common mode for SPI bus slave communication. Table 1 below summarizes the available modes. Transactions are half-duplex to allow for bidirectional communication.
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This article covers the essential characteristics and prominent advantages of the inter—integrated circuit AKA I2C serial-communications protocol. It should come as no surprise that a common feature of electronic systems is the need to share information among two or three or ten separate components. Each protocol has its pros and cons, and it is important to know a little about each one so that you can make an informed decision when choosing components or interfaces. This article is about I 2 C, which is typically used for communications between individual integrated circuits located on the same PCB. You need to know the basic characteristics of I 2 C before you can thoroughly understand a comparison between these three interfaces, so we will discuss that topic at the end of this article. I 2 C stands for inter—integrated circuit bus. There is no doubt, though, that the I 2 C protocol suffers from a serious terminology problem.
Serial Peripheral Interface
I 2 C Inter-Integrated Circuit , pronounced I-squared-C , is a synchronous , multi-master, multi-slave , packet switched , single-ended , serial communication bus invented in by Philips Semiconductor now NXP Semiconductors. It is widely used for attaching lower-speed peripheral ICs to processors and microcontrollers in short-distance, intra-board communication. Since October 10, , no licensing fees are required to implement the I 2 C protocol. One purpose of SMBus is to promote robustness and interoperability.
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