Rainbow Electronics DS28EA00 - Manual (Page 14)

DS28EA00 1-Wire Digital Thermometer with Sequence Detect and PIO
14 of 29
Figure 10-2. Control Function Flow Chart (continued)
From Figure 10
3
rd
Part
To Figure 10
3
rd
Part
To Figure 10
1
st
Part
From Figure 10
1
st
Part
Y
N
48h
Copy Scratch-
pad?
Y N
V
DD
Powered?
DS28EA00 starts
copy to EEPROM
N
Y
Copy
Completed?
Master RX “0s“
Master activates
strong pull-up
for t
PROG
DS28EA00 copies
scratchpad data
to EEPROM
Master deactivates
strong pull-up
N
Y
Master
TX Reset?
Master RX “1s“
Y
N
44h
Convert Tempera-
ture
Y N
V
DD
Powered?
DS28EA00 starts
Temperature
Conversion
N
Y
Conversion
Completed?
Master RX “0s“
Master activates
strong pull-up
for t
CONV
DS28EA00
converts
Temperature
Master deactivates
strong pull-up
N
Y
Master
TX Reset?
Master RX “1s“
Master decision.
The master needs to
know whether V
DD
power is available.