STLM75_08 datasheet(9/37 Pages) STMICROELECTRONICS

Part #	STLM75

Description	Digital temperature sensor and thermal watchdog

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STLM75

Description

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1.3

Pin descriptions

See Figure 1 on page 7 and Table 1 on page 8 for a brief overview of the signals connected

to this device.

1.3.1

SDA (open drain)

This is the serial data input/output pin for the 2-wire serial communication port.

1.3.2

SCL

This is the serial clock input pin for the 2-wire serial communication port.

1.3.3

OS/INT (open drain)

This is the over-limit signal/interrupt alert output pin. It is open drain, so it needs a pull-up

resistor. In Interrupt mode, it outputs a pulse whenever the measured temperature exceeds

the programmed threshold (TOS). It behaves as a thermostat, toggling to indicate whether

the measured temperature is above or below the threshold and hysteresis (THYS).

1.3.4

GND

Ground; it is the reference for the power supply. It must be connected to system ground.

1.3.5

A2, A1, A0

A2, A1, and A0 are selectable address pins for the 3 LSBs of the I2C interface address.

They can be set to VDD or GND to provide 8 unique address selections.

1.3.6

VDD

This is the supply voltage pin, and ranges from +2.7 V to +5.5 V.

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