DS28E04-100 Maxim, DS28E04-100 Datasheet - Page 28

• Manufacturer Part Number: DS28E04-100
• Description: The DS28E04-100 is a 4096-bit, 1-Wire® EEPROM chip with seven address inputs
• Manufacturer: Maxim

Read/Write Time Slots
Data communication with the DS28E04-100 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 16 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
during a write time slot and how long data is valid during a read time slot.
Figure 16. Read/Write Timing Diagram
Write-One Time Slot
Write-Zero Time Slot
Read-Data Time Slot
V
V
TL
IHMASTER
IHMASTER
, the DS28E04-100 starts its internal timing generator that determines when the data line is sampled
V
V
V
ILMAX
V
ILMAX
V
V
V
V
PUP
PUP
0V
0V
TH
TH
TL
TL
t
F
t
F
RESISTOR
RESISTOR
t
W1L
ε
t
W0L
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MASTER
MASTER
t
SLOT
t
SLOT
ε
t
REC