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Advantages of 1-wire interface | disadvantages of 1-wire interface

This page covers advantages and disadvantages of 1-wire interface. It mentions 1-wire interface advantages or benefits and 1-wire interface disadvantages or drawbacks.

What is 1-wire interface?

1-wire protocol uses single wire interface for data communication between master and slave devices.
• 1-wire interface uses single data line without any clock. Internal clock is used. The protocol uses two wires viz. data and GND.
• 1-wire uses Half duplex communication.
• The 1-wire interface protocol uses 64-bit device addressing scheme for communication between devices.
• The multiple slaves are supported in multi-drop mode.
• The data rate of 16.3 Kbps(in standard mode) and 163 kbps (in overdrive mode).
• The interface consumes lower power.

1 wire protocol interface

Refer 1-wire interface tutorial>> and 1-wire vs 2-wire>> for more information.

Benefits or advantages of 1-wire interface

Following are the benefits or advantages of 1-wire interface:
➨Multiple slaves are accessed using only 2-wires in this interface type.
➨Due to use of less wires, the interface is cheaper.
➨It is easy to implement the interface.
➨The interface supports longer distance (about 300 meters).

Drawbacks or disadvantages of 1-wire interface

Following are the disadvantages of 1-wire interface:
➨It is implemented both in the hardware as well as software. The synchronization of data at the receiver has to be taken care in software which is a complex task.
➨Though the interface supports longer distance, it is limited due to noise and cable capacitance.
➨It supports slower speed of communication.
➨1-wire slave devices are manufactured by Dallas semiconductor only.

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Difference between 1 Wire Interface and other interface types

Difference between 1 wire and 2 wire interface types
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