说明：  Digital temperature sensor and thermal watchdog
(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)