DS28E04S-100+T Maxim Integrated Products, DS28E04S-100+T Datasheet - Page 28

• Manufacturer Part Number: DS28E04S-100+T
• Description: IC EEPROM 4KBIT 16SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS28E04S-100+T

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 4K (256 x 16)
• Interface: 1-Wire Serial
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Speed: -

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
V
TL
IHMASTER
IHMASTER
IHMASTER
, the DS28E04-100 starts its internal timing generator that determines when the data line is sampled
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
e
d
Sampling
Window
Master
t
W0L
t
MSR
28 of 36
MASTER
MASTER
MASTER
t
SLOT
t
t
SLOT
SLOT
t
REC
DS28E04
t
REC