Rainbow Electronics DS2781 - Manual (Page 30)

DS2781: Two-Cell Standalone Fuel Gauge IC
30 of 30
Figure 23. 1-Wire Write- And Read-Time Slots
LINE TYPE LEGEND:
Bus master active low DS2781 active low
Resistor pullup
Both bus master and
DS2781 active low
t
SLOT
V
PULLUP
GND
READ 0 SLOT READ 1 SLOT
t
SLOT
t
REC
>1 ms
t
RDV
Master Sample Window Master Sample Window
t
RDV
V
PULLUP
GND
t
SLOT
Standard
t
LOW1
t
SLOT
WRITE 0 SLOT WRITE 1 SLOT
t
LOW0
t
REC
>1 ms
DS2781 Sample Window
MIN TYP MAX
15 ms 15 ms 30 ms
DS2781 Sample Window
MIN TYP MAX
15 ms 15 ms 30 ms
2 ms
Overdrive
Mode
1 ms 3 ms 1 ms 2 ms 3 ms