General Description

The MIC284 is a versatile digital thermal supervisor capable of measuring temperature using its own internal sensor and an inexpensive external sensor or embedded silicon diode such as those found in the Intel Pentium III™ CPU. A 2-wire serial interface is provided to allow communication with either I2C™ or SMBus™ masters. Features include an open-drain overtemperature output with dedicated registers for implementing fan control or over-temperature shutdown circuits.

Features

• Optimized for CPU Thermal Supervision in Computing

Applications

• Measures Local and Remote Temperature

• Sigma-Delta ADC for 8-Bit Temperature Results

• 2-Wire SMBus-compatible Interface

• Programmable Thermostat Settings for both Internal and

External Zones

• Open-Drain Interrupt Output Pin

• Open-Drain Over Temperature Output Pin for

Fan Control or Hardware Shutdown

• Interrupt Mask and Status Bits

• Low Power Shutdown Mode

• Failsafe response to diode faults

• 2.7V to 5.5V Power Supply Range

• 8-Lead SOIC and MSOP Packages

Applications

• Desktop, Server and Notebook Computers

• Power Supplies

• Test and Measurement Equipment

• Wireless Systems

• Networking/Datacom Hardware