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App note: Guidelines for reliable long line 1-wire networks

Posted on Saturday, April 20th, 2013 in app notes by DP

app_note1

Here’s a guidelines for reliable 1-Wire Network from Maxim:

The 1-Wire protocol was originally designed to facilitate communication with nearby devices on a short connection. 1-Wire was also a way to add auxiliary memory on a single microprocessor port pin. Methods were later developed to extend the 1-Wire protocol to network applications well beyond the size of a circuit board. This document discusses various aspects of 1-Wire networks and provides design guidelines for their reliable operation. Several appendices address fine-tuning the 1-Wire bus interface and illustrate 1-Wire communication waveforms in various conditions.

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3 Responses to “App note: Guidelines for reliable long line 1-wire networks”

  1. Oliver says:

    So what lengths are we talking about here? 10’s of cm? hundreds of meters?

  2. ee says:

    Also, I would like to know how long is a piece of string?

  3. Oliver says:

    Appearantly this goes upto several hundreds of meters. The examples go about branches that can be 150-300 meters, instead of the usual centimeters then you normally see on a PCB.

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