Datasheet

Description STCN75
8/36 Doc ID 13307 Rev 9
Figure 2. Connections
1. 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 overlimit 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 (T
OS
). It behaves as a thermostat, toggling to indicate whether
the measured temperature is above or below the threshold and hysteresis (T
HYS
).
1
A
2
GND
A
1
A
0
SCL
SDA
(1)
V
DD
OS/INT
(1)
AI11841
2
3
4
8
7
6
5
AI11833a
Temperature
Sensor and
Analog-to-Digital
Converter (ADC)
S-D
A
1
A
0
V
DD
A
2
GND
Configuration Register
SDA
SCL
OS/INT
2-wire I
2
C Interface
Pointer Register
Control and Logic
Comparator
Temperature Register
THYS Set Point Register
TOS Set Point Register