STLM75 datasheet(15/37 Pages) STMICROELECTRONICS

Part #	STLM75

Description	Digital temperature sensor and thermal watchdog

PDF	37 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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15 / 37 page

STLM75

Operation

15/37

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, 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

Digital Output

Binary

HEX

+125°C

0 1111 1010

0FAh

+25°C

0 0011 0010

032h

+0.5°C

0 0000 0001

001h

0°C

0 0000 0000

000h

–0.5°C

1 1111 1111

1FFh

–25°C

1 1100 1110

1CEh

–40°C

1 1011 0000

1B0h

–55°C

1 1001 0010

192h

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