how many Devices can we connect on I2c Bus

[Deepak Rathore]

Good Evening to all,



Please clear my some doubt about I2c Bus.

How many devices can we connect on single I2C Bus. and how can we connect it on the I2C Bus Network.

 

[barry]

I don't believe there is a hard spec for maximum number of physical devices. It depends on length of your bus, speed etc. You are logically limited to 128, since you've got a 7-bit address field.

 

[Emb4U]

in i2c document maximum nodes in a single device is limit and maximum capacitance is 400pf..then can we calculate that how many nodes can connect in a single bus ?

 

[Emb4U]

Maximum 127 nodes we can connect in a I2C network.

 

[aashishsharma]

7 bit addressing so 127 physical devices i think