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AN2278 Datasheet(PDF) 6 Page - STMicroelectronics

Part # AN2278
Description  Temperature sensor application using ST LM135
PDF  9 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2278 Datasheet(HTML) 6 Page - STMicroelectronics

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Software configuration
AN2278
6/9
Figure 3.
Timer interrupt flowchart
Temperature sensing
and A/D conversion
NO
NO
YES
YES
NO
Is
1 sec up?
Is
no. of samples
==16?
Increment
counter
NO
YES
Calculate average
temperature
Is
average value
within limits?
LED Toggle
message display
on hyperterminal
NO
Display
temperature on
hyperterminal
YES
Is
1 hour up?
Store min:max
temperature value
in EEPROM.
Increment counter
Counter==20?
Reset counter
to 0
Timer interrupt



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