DS1922L Maxim, DS1922L Datasheet - Page 43

• Manufacturer Part Number: DS1922L
• Description: The DS1922L/T temperature logger iButtons® are rugged, self-sufficient systems that measure temperature and record the result in a protected memory section
• Manufacturer: Maxim

Figure 13. Read/Write Timing Diagrams
WRITE-ONE TIME SLOT
V
WRITE-ZERO TIME SLOT
V
READ-DATA TIME SLOT
V
IHMASTER
IHMASTER
IHMASTER
V
V
V
ILMAX
ILMAX
ILMAX
V
V
V
PUP
V
PUP
V
PUP
V
V
V
V
0V
0V
0V
TH
TH
TH
TL
TL
TL
______________________________________________________________________________________
t
t
t
Temperature Logger iButton with 8KB
F
F
F
t
RL
RESISTOR
t
RESISTOR
RESISTOR
W1L
t
MSR
ε
δ
SAMPLING
WINDOW
MASTER
t
W0L
t
t
t
SLOT
SLOT
SLOT
MASTER
MASTER
MASTER
Data-Log Memory
ε
t
REC
t
REC
DS1922L/DS1922T
43