DS1921H_12 Datasheet, PDF (21/45 Pages) Maxim Integrated Products – High-Resolution Thermochron® iButton® Range H: +15°C to +46°C, Z: -5°C to +26°C

MEMORY/CONTROL FUNCTION FLOW CHART Figure 10-4
DS1921H/Z
From Figure 10
3^rd Part
3CH
N
Clear
Memory
Y
N
EMCLR = 1?
Y
DS1921 clears Mission
Time Stamp, Mission
Samples Counter,
Mission Start Delay,
Sample Rate Register
DS1921 clears Alarm Time
Stamps and Durations
DS1921 clears
Histogram Memory
DS1921 sets
MEMCLR = 1
DS1921 sets
EMCLR = 0
N
Master
TX Reset?
Y
44H
N
Convert
Temp.
Y
DS1921 sets
EMCLR = 0
Y
Mission in
Progress?
N
DS1921 Starts
Temperature
Conversion Process
N
Master
TX Reset?
Y
Temperature Con-
version Process
DS1921 sets
TCB\ = 0
DS1921 Performs a
Temp. Conversion
DS1921 copies Result
to Address 0211h
DS1921 sets
TCB\ = 1
End of Process
N
Master
TX Reset?
Y
To Figure 10
3^rd Part
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