Introduction - If you have any usage issues, please Google them yourself
The I2C bus - specification
Due to the development of large scale integrated circuit technology, integrated on A single chip CPU and system that must be A separate component of ROM, RAM, I/O port, A/D, D/A and other peripheral circuit and have been implemented, that's the beauty of single-chip microcomputer or micro controller. At present, many companies in the world produce single-chip microcomputers, which include various types of cpus, various capacities and varieties of ROM, RAM, and various functions of I/O, etc. However, the single-chip microcomputer is limited, so we can only use some kind of microcomputer to expand. There are two ways to extend it: one is the parallel bus, the other is the serial bus. Because the serial bus connection is short, the structure is simple, often without special motherboard and socket and directly connect the various devices with wires. Therefore, the use of serial bus greatly simplifies the system hardware design. PHILIPS introduced the I2C serial bus as early as a decade ago. It is a high performance serial bus with multi-host system which includes the determination and synchronization of high and low speed devices.