1-Wire Digital Thermometer with
Sequence Detect and PIO
DS28EA00
14
Maxim Integrated
TO FIGURE 9c
FROM FIGURE 9c
FROM FIGURE 9a
TO FIGURE 9a
DS28EA00 STARTS
TEMPERATURE CONVERSION
MASTER ACTIVATES STRONG
PULLUP FOR t
CONV
MASTER DEACTIVATES
STRONG PULLUP
DS28EA00 CONVERTS
TEMPERATURE
44h
CONVERT
TEMPERATURE
N
Y
Y
B4h
READ POWER
MODE?
N
Y
N
N
Y
N
Y
V
DD
POWERED?
V
DD
POWERED?
CONVERSION
COMPLETED?
MASTER Rx "0"s
MASTER Rx "1"s
MASTER Rx "0"s
MASTER Rx "1"s
N
MASTER Tx RESET?
Y
N
MASTER Tx RESET?
Y
MASTER DECISION.
THE MASTER NEEDS TO
KNOW WHETHER V
DD
POWER IS AVAILABLE.
Figure 9b. Control Function Flowchart
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