As shown in Figure 2, the digital temperature sensor comes with several user-programmable registers to provide maximum flexibility for temperature-sensing applications. The registers allow specifying critical upper and lower temperature limits, as well as hysteresis settings. Both the limits and hysteresis values are used for communicating temperature events from the chip to the system. The sensor uses an industry standard 2-wire, I²C/SMBus serial interface and allows up to eight devices to be controlled on the bus.