I2C Bus

Abstract

The I2C bus, also known as the two-wire interface (TWI), was developed by Philips circa 1982 to allow communication with lower-speed peripherals.17 It was also economical because it only required two wires (excluding ground and power). Since then, other standards have been devised, building upon this framework, such as the SMBus. However, the original I2C bus remains popular as a simple, cost-effective way to connect peripherals.