I²C - Wikipedia
https://en.wikipedia.org/wiki/I%C2%B2C
I 2 C uses only two bidirectional open-collector or open-drain lines: serial data line (SDA) and serial clock line (SCL), pulled up with resistors. Typical voltages used are +5 V or +3.3 V, although systems with other voltages are permitted. The I 2 C reference design has a 7-bit address space, with a rarely used 10-bit extension. Common I 2 C bus speeds are the 100 kbit/s standard …
DA: 59 PA: 23 MOZ Rank: 37
