STCN75DS2F datasheet(8/35 Pages) STMICROELECTRONICS

8 / 35 page

Summary description

STCN75

8/35

Figure 2.

Connections (SO8 and TSSOP8)

SDA and OS/INT are open drain.

Figure 3.

Functional block diagram

1.3

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.

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).

GND

SCL

SDA(1)

VDD

OS/INT(1)

AI11841

AI11833a

Temperature

Sensor and

Analog-to-Digital

Converter (ADC)

S-D

VDD

GND

Configuration Register

SDA

SCL

OS/INT

2-wire I

C Interface

Pointer Register

Control and Logic

Comparator

Temperature Register

THYS Set Point Register

TOS Set Point Register

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