Rainbow Electronics DS2406 - Manual (Page 31)

DS2406
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16. The duration of the low pulse sent by the master should be a minimum of 1µs with a maximum value
as short as possible to allow time for the pull-up resistor to recover the line to a high level before the
1-Wire device samples in the case of a Write 1 Low Time, or before the master samples in the case of
a Read Low Time.