Datasheet

STLM75 Description
Doc ID 13296 Rev 12 7/40
1.2 Temperature sensor output
The STLM75 temperature sensor has a dedicated open drain overlimit 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 (T
OS
) READ/WRITE register), and the hysteresis temperature (which is stored in
the 16-bit (T
HYS
) 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
1. SDA and OS/INT are open drain.
AI11899
SDA
(1)
V
DD
STLM75
GND
SCL
OS/INT
(1)
A
0
A
1
A
2