STLM75DS2F datasheet(7/37 Pages) STMICROELECTRONICS

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STLM75

Summary description

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1.2

Temperature sensor output

The STLM75 Temperature Sensor has a dedicated open drain Over-Limit Signal/Interrupt

(OS/INT) output which features a thermal Alarm function. This function provides a user-

programmable trip and turn-off temperature. It can operate in either of two selectable

modes:

●

Comparator mode, and

●

Interrupt mode.

At power-up the STLM75 immediately begins measuring the temperature and converting the

temperature to a digital value.

The measured temperature value is compared with a temperature limit (which is stored in

the 16-bit (TOS) READ/WRITE register), and the hysteresis temperature (which is stored in

the 16-bit (THYS) READ/WRITE register). If the measured value exceeds these limits, the

OS/INT pin is activated (see Figure 3 on page 8 and Table 2 on page 14).

Note:

See Pin descriptions on page 9 for details.

Figure 1.

Logic Diagram

SDA and OS/INT are open drain.

AI11899

SDA(1)

VDD

STLM75

GND

SCL

OS/INT(1)

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