Rainbow Electronics DS2505 - Manual (Page 20)

DS2505
20 of 24
READ/WRITE TIMING DIAGRAM Figure 10 (cont’d)
NOTE:
For read-data time slots the optimal sampling point for the master is as close as possible to the end of the
t
RDV
period without exceeding the 15 µs window. For the case of a read-one time slot, this maximizes the
amount of time for the pull-up resistor to recover the line to a high land. For a read-zero time slot it
ensures that a read will occur before the fastest 1-Wire device releases the line (t
RELEASE
= 0).