What are the characteristics of I2C and SPI?-EEWORLD

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What are the characteristics of I2C and SPI?

Answer: The I2C bus is a two-wire system that uses a hardware setting method for device addresses. Software addressing completely avoids the chip select line addressing method of the device, making the hardware system have a simple and flexible expansion method. The I2C bus is simple, compact, and easy to implement modularization and standardization.

SPI is a synchronous serial communication method introduced by Motorola. It is a three-wire synchronous bus. When there are multiple SPI interface microcontrollers, there should be one master and multiple slaves. At a certain time, only one microcontroller can be the master device; when multiple SPI peripheral devices are expanded, the microcontroller should use the I/O port lines to time-share the peripheral devices.

Keywords：I2C SPI Reference address：What are the characteristics of I2C and SPI?

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