STCN75DS2F 查看數據表（PDF） - STMicroelectronics

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STCN75DS2F

Digital temperature sensor and thermal watchdog

STMicroelectronics 

STCN75

Description

1.2

Note:

Temperature sensor output

The STCN75 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:

● Section 2.3: Comparator mode

● Section 2.4: Interrupt mode.

At power-up the STCN75 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).

See Pin descriptions on page 8 for details.

Figure 1. Logic diagram

VDD

SDA(1)

SCL

A0

A1

A2

STCN75

OS/INT(1)

GND

1. SDA and OS/INT are open drain.

Table 1. Signal names

Pin

Sym

Type/direction

1

SDA(1)

Input/output

2

SCL

3

OS/INT(1)

Input

Output

4

GND

Supply ground

5

A2

Input

6

A1

Input

7

A0

Input

8

VDD

Supply power

1. SDA and OS/INT are open drain.

Description

Serial data input/output

Serial clock input

Overlimit signal/interrupt alert output

Ground

Address2 input

Address1 input

Address0 input

Supply voltage (2.7 V to 5.5 V)

AI11899

Doc ID 13307 Rev 9

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