STTS75

STTS75 Digital temperature sensor and thermal watchdog Features ■ Measures temperatures from –55 °C to +125 °C (–67 °F to +257 °F) – ±0.5 °C (typ) accuracy – ±2 °C (max) accuracy from –25 °C to +100 °C ■ Low operating current: 75 µA (typ) ■ No external components required ■ 2-wire I2C/SMBus-compatible serial interface – Selectable serial bus address allows connection of up to eight devices on the same bus ■ Thermometer resolution is user-configurable from 9 (default) to 12 bits (0.5 °C to 0.0625 °C) ■ 9-bit conversion time is 45 ms (typ) ■ Programmable temperature threshold and hysteresis set points ■ Wide power supply range-operating voltage range: 2.7 V to 5.5 V ■ Power saving one-shot temperature measurement ■ Power-up defaults permit standalone operation as thermostat ■ Shutdown mode to minimize power consumption ■ Separate open drain output pin operates as an interrupt or comparator/thermostat output (dual purpose event pin) ■ Packages: – SO8 – MSOP8 (TSSOP8) SO8 MSOP8 (TSSOP8) June 2010 Doc ID 13298 Rev 11 1/41 www.st.com 1 Contents Contents STTS75 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 Serial communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2 Temperature sensor output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.3 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...