Rainbow Electronics DS2770 - Manual (Page 23)

DS2770
23 of 27
1-WIRE WRITE AND READ TIME SLOTS Figure 19
V
CC
GND
t
SLOT
DQ
t
LOW1
t
SLOT
WRITE 0 SLOT WRITE 1 SLOT
t
LOW0
t
REC
>1 ms
DS2770 Sample Window
MIN TYP MAX
15 ms 15 ms 30 ms
DS2770 Sample Window
MIN TYP MAX
15 ms 15 ms 30 ms
t
SLOT
V
CC
GND
READ 0 SLOT READ 1 SLOT
t
SLOT
t
REC
DQ
>1 ms
t
RDV
Master Sample Window Master Sample Window
t
RDV
LINE TYPE LEGEND:
Bus master active low DS2770 active low
Resistor pullup
Both bus master and
DS2770 active low