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STCN75 Datasheet(PDF) 8 Page - STMicroelectronics |
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STCN75 Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 35 page Summary description STCN75 8/35 Figure 2. Connections (SO8 and TSSOP8) 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 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 A2 GND A1 A0 SCL SDA(1) VDD OS/INT(1) AI11841 2 3 4 8 7 6 5 AI11833a Temperature Sensor and Analog-to-Digital Converter (ADC) S-D A1 A0 VDD A2 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 |
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