STDS75_08 Datasheet, PDF (15/37 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog

STDS75
Operation
2.7
Temperature data format
Table 3 shows the relationship between the output digital data and the external temperature
for 12-bit resolution.
Temperature data for temperature, T_OS and T_HYS registers is represented by 9-bit, 10-bit,
11-bit, and 12-bit depending upon the resolution bits RC1, RC0 (bits 6 and 5) in the
configuration register (see Table 7 on page 17). The default resolution is 9-bits.
The left-most hot in the output data stream controls temperature polarity information for
each conversion. If the sign bit is '0', the temperature is positive and of the sign bit is '1', the
temperature is negative.
Table 3. Relationship between temperature and digital output
Temperature
Sign
Number of bits used by
conversion resolution
9
Digital
10
11
12
Always ^output
zero ^(HEX)
+125°C
0
+25.0625°C
0
+10.125°C
0
+0.5°C
0
0°C
0
–0.5°C
1
–10.25°C
1
–25.0625°C
1
–55°C
1
12-bit resolution
0000
11- bit resolution
0 0000
10-bit resolution
0
0 0000
9-bit resolution
0
0
0 0000
111
1101
0
0
0
0 0000 7D00
001
1001
0
0
0
1 0000 1910
000
1010
0
0
1
0 0000 0A20
000
0000
1
0
0
0 0000 0080
000
0000
0
0
0
0 0000 0000
111
1111
1
0
0
0 0000 FF80
111
0101
1
1
1
0 0000 F5E0
110
0110
1
1
1
1 0000 E6F0
100
1001
0
0
0
0 0000 C900
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