STCN75_08 Datasheet, PDF (14/35 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog

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, T_OS, and T_HYS registers is represented as a 9-bit,
two’s 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
+0.5°C
0 0011 0010
0 0000 0001
0°C
0 0000 0000
–0.5°C
1 1111 1111
–25°C
1 1100 1110
–40°C
–55°C
1 1011 0000
1 1001 0010
HEX
0FAh
032h
001h
000h
1FFh
1CEh
1B0h
192h
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