View mic284 datasheet:

MIC284 Micrel MIC284 Two-Zone Thermal Supervisor Final Information General Description Features The MIC284 is a versatile digital thermal supervisor capable • Optimized for CPU Thermal Supervision in Computing of measuring temperature using its own internal sensor and Applications an inexpensive external sensor or embedded silicon diode • Measures Local and Remote Temperature such as those found in the Intel Pentium III* CPU. A 2-wire • Sigma-Delta ADC for 8-Bit Temperature Results serial interface is provided to allow communication with either • 2-Wire SMBus-compatible Interface I2C** or SMBus* masters. Features include an open-drain • Programmable Thermostat Settings for both Internal and over-temperature output with dedicated registers for imple- External Zones menting fan c