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DS1921 Datasheet(PDF) 19 Page - Dallas Semiconductor

Part # DS1921
Description  High-Resolution Thermochron iButton
PDF  44 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1921 Datasheet(HTML) 19 Page - Dallas Semiconductor

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DS1921H/Z
19 of 44
MEMORY/CONTROL FUNCTION FLOW CHART Figure 10-2
To Figure 10
3
rd Part
55H
Copy
Scratchpad
Master TX
E/S Byte
Authorization
Code Match?
DS1921 Copies Scratchpad
Data to Memory
Copying
Finished
Master
TX Reset?
Master
TX Reset?
AA = 1
F0H
Read
Memory
Master
TX Reset?
End of
Memory?
Master RX "0"s
DS1921 sets Memory
Address = (T15:T0)
Master RX Data Byte
from Memory Address
Master TX
TA1 (T7:T0), TA2 (T15:T8)
Master
RX "1"s
DS1921 TX "0"
DS1921 TX "1"
Master
TX Reset?
Master
RX "1"s
Master TX
TA1 (T7:T0), TA2 (T15:T8)
DS1921 Incre-
ments Address
Counter
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
DS1921 sets
EMCLR = 0
DS1921 sets
EMCLR = 0
From Figure 10
1
st Part
To Figure 10
1
st Part
From Figure 10
3
rd Part



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