DS2413 Maxim, DS2413 Datasheet - Page 14

• Manufacturer Part Number: DS2413
• Description: The DS2413 is a dual-channel programmable I/O 1-Wire® chip
• Manufacturer: Maxim

Read/Write Time Slots
Data communication with the DS2413 takes place in time slots, which carry a single bit each. Write-time slots
transport data from bus master to slave. Read-time slots transfer data from slave to master. Figure 12 illustrates
the definitions of the write- and read-time slots.
All communication begins with the master pulling the data line low. As the voltage on the 1-Wire line falls below the
threshold V
a write-time slot and how long data is valid during a read-time slot.
Figure 12. Read/Write Timing Diagram
Write-One Time Slot
Write-Zero Time Slot
Read-Data Time Slot
V
V
V
TL
IHMASTER
IHMASTER
IHMASTER
, the DS2413 starts its internal timing generator that determines when the data line is sampled during
V
V
V
V
V
V
ILMAX
ILMAX
ILMAX
V
V
V
V
V
V
PUP
PUP
PUP
0V
0V
0V
TH
TH
TH
TL
TL
TL
t
F
t
t
F
F
RESISTOR
RESISTOR
RESISTOR
t
RL
t
W1L


Sampling
Window
Master
t
W0L
t
MSR
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MASTER
MASTER
MASTER
t
SLOT
t
t
SLOT
SLOT

t
REC
DS2413
t
REC