STCN75_08 Datasheet, PDF(8/35 Page) STMicroelectronics – Digital temperature sensor and thermal watchdog

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STCN75_08 Datasheet, PDF (8/35 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog

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Description

Figure 2. Connections (SO8 and TSSOP8)

SDA(1) 1

SCL 2

OS/INT(1) 3

GND 4

8 VDD

7 A0

6 A1

5 A2

AI11841

1. SDA and OS/INT are open drain.

Figure 3. Functional block diagram

STCN75

VDD

Temperature

Sensor and

Analog-to-Digital

Converter (ADC)

S-D

Configuration Register

Temperature Register

THYS Set Point Register

TOS Set Point Register

Pointer Register

Control and Logic

Comparator

2-wire I2C Interface

GND

OS/INT

SDA

SCL

AI11833a

1.3

1.3.1

1.3.2

1.3.3

8/35

Pin descriptions

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

to this device.

SDA (open drain)

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

SCL

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

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).

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