Jeff Epler wrote:
> On Tue, Feb 16, 2010 at 11:35:59AM -0600, Jon Elson wrote:
>> HOWEVER, the Maxim part I think you have in mind is not like that, and
>> it runs about 50 us per bit.
> 
> Ah, I stand corrected.  My recollection was that the bit time of onewire
> was more in the realm of 1ms than tens of us.

There are two speeds defined by the One-wire spec:

> Most 1-Wire devices support two data rates: Standard speed of about 15kbps 
> and Overdrive speed of about 111kbps

(from <http://www.maxim-ic.com/app-notes/index.mvp/id/3989>)

I think all 1-wire devices must support the normal speed (67 us/bit), 
and you can probe the device to see if it supports overdrive (9 us/bit).


-- 
Sebastian Kuzminsky

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