Owner's manual

DS2705: SHA-1 Authentication Master
18 of 18
Figure 9. 1-Wire Write and Read-Time Slots
WRITE 0 SLOT WRITE 1 SLOT
t
SLOT
t
LOW0
t
SLOT
t
REC
t
LOW1
V
PULLUP
GND
Slave Sample Window
MIN TYP MAX
15ms
2ms
15ms 30ms
1ms 3ms
Slave Sample Window
MIN TYP MAX
15ms
2ms
15ms 30ms
1ms 3ms Overdrive
Standard
MODE
READ DATA SLOT
Data = 0
t
SLOT
15ms
t
SLOT
t
REC
V
PULLUP
GND
Master Sample Window
t
RDV
15ms
Master Sample Window
t
LOW1
Data = 1
Overdrive
Standard
MODE
2ms 2ms
LINE TYPE LEGEND:
Bus Master active LOW Slave active LOW
Both Bus Master and Device Resistor pullup
active LOW
t
RDV
PACKAGE INFORMATION
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