Enlace	I2C (Inter-Integrated Circuit)	Serial Peripheral Interface (SPI)	1-Wire	PJON SoftwareBitBang	I3C / SenseWire	SMBus (System Management Bus)	DCC (Digital Command Control)	CAN bus (Controller Area Network)
Design date	1982	1985 ?	1990 ?	2010	2016	1994	1989 ?	1983
Characteristics
Max nodes	127 / 1024	Limited by connections	248	255	127	128	16384 (214)	229
Max distance	7.6 m	10 ft	300 m	2,000 m				40 m
Bit rates	5 Mbit/s		16.3 kbit/s	27kbit/s	12.5 Mbit/s (400 Kbits/s for I2C compatibility)	100 kbit/s	5 kbit/s	1 Mbit/s
Number of data wires / pin	2 (SDA, SCL)	3 + 1 per nodes	1 (Data + GND)	1 (Data + GND)	2 (SDA, SCL)	2	1
Communication type	Half-duplex	Full-duplex	Half-duplex	Half-duplex / Simplex	Half-duplex	Half-duplex	Simplex	Half-duplex
Broadcast	Sí	No	Sí	Sí	Sí	Sí	Sí
Error detection	No	No	Sí CRC	Sí Dual CRC	Sí Parity in SDR mode / CRC in HDR mode	Sí	Sí	Sí
Direct Arduino compatibility	Sí	Sí	Sí	Sí		Sí derived from I2C	- via adapter	- via adapter (ie: MCP2515)
Enlaces
Wikipedia	wikipedia.org/...	wikipedia.org/...	wikipedia.org/...		wikipedia.org/...	wikipedia.org/...	wikipedia.org/...	wikipedia.org/...
Sitio web				pjon.org/...	mipi.org/...		opendcc.de/...
Arduino library	arduino.cc/...	arduino.cc/...	arduino.cc/...	github.com/...			github.com/...	github.com/...