Datasheet Microchip MIC284-1YMM

MIC284 Micrel, Inc. MIC284
Two-Zone Thermal Supervisor 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.
Interrupt status and mask bits are provided for reduced software overhead. The open-drain interrupt output pin can be
used as either an overtemperature alarm or a thermostatic
control signal. A programmable address pin permits two
devices to share the bus. (Alternate base addresses available-contact Micrel.) Superior performance, low power and
small size makes the MIC284 an excellent choice for the most
demanding thermal management applications. The MIC284
is part of the SilentSense™ family of thermal supervisors.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com. SilentSense™ 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 …