Datasheet

DS28E05 1-Wire EEPROM
www.maximintegrated.com
Maxim Integrated │ 14
Slave-to-Master
Aread-datatimeslotbeginslikeawrite-onetimeslot.The
voltageonthedatalinemustremainbelowV
TL
until the
read low time t
RL
is expired. During the t
RL
window,when
respondingwitha0,theDS28E05startspullingthedata
linelow;itsinternaltiminggeneratordetermineswhenthis
pulldown ends and the voltage starts rising again. When
respondingwitha1,theDS28E05doesnotholdthedata
linelowatall,andthevoltagestartsrisingassoonast
RL
is over.
Figure 10. Read/Write Timing Diagrams
RESISTOR MASTER
RESISTOR MASTER
RESISTOR MASTER DS28E05
ε
ε
δ
V
PUP
V
IHMASTER
V
TH
V
TL
V
IL(MAX)
0V
t
F
V
PUP
V
IHMASTER
V
TH
V
TL
V
IL(MAX)
0V
t
F
V
PUP
V
IHMASTER
V
TH
V
TL
V
IL(MAX)
0V
t
F
t
SLOT
t
W1L
t
REC
t
SLOT
t
SLOT
t
W0L
t
REC
MASTER
SAMPLING
WINDOW
t
RL
t
MSR
WRITE-ONE TIME SLOT
WRITE-ZERO TIME SLOT
READ-DATA TIME SLOT