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STCN75 Datasheet, PDF (14/35 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog | |||
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Operation
STCN75
2.7
Temperature data format
Table 3 shows the relationship between the output digital data and the external
temperature. Temperature data for the Temperature, TOS, and THYS registers is
represented as a 9-bit, twoâs complement word.
The left-most bit in the output data stream contains temperature polarity information for each
conversion. If the sign bit is '0', the temperature is positive and if the sign bit is '1,' the
temperature is negative.
Table 3. Relationship between temperature and digital output
Temperature
Binary
Digital output
+125°C
0 1111 1010
+25°C
0 0011 0010
+0.5°C
0 0000 0001
0°C
0 0000 0000
â0.5°C
â25°C
1 1111 1111
1 1100 1110
â40°C
1 1011 0000
â55°C
1 1001 0010
HEX
0FAh
032h
001h
000h
1FFh
1CEh
1B0h
192h
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