TC1066

EVALUATION KIT AVAILABLE TC1066 *Patent Pending ACPI-Compliant SMBus Thermal Sensor with External Diode Input FEATURES s s s s s s s s s s s s s Specifically ACPI-Compliant Backward Compliant to Older APM Systems Includes Internal and External Sensing Capability Outputs Temperature As 8-Bit Digital Word Solid State Temperature Sensing; 1°C Resolution 3.0 – 5.5V Operating Range Independent Internal and External Threshold Set-Points With ALERT#/COMP# Interrupt Output SMBus 2-Wire Serial Interface Optional CRITICAL Set-Point for Full ACPI Compliant Implementation Up To Nine TC1066s May Share the Same Bus Standby Mode for Low Standby Power Low Power ........................... 70 µA (max) Operating ....................................... 10 µA (max) Standby Mode 16-Pin Plastic QSOP Package GENERAL DESCRIPTION The TC1066 is a serially programmable temperature sensor optimized for monitoring modern high performance CPUs with on-board integrated thermal diodes. Temperature data is converted from the CPU’s thermal diode outputs and made available as an 8-bit digital word. Communication with the TC1066 is accomplished via the standard System Management Bus (SMBus) commonly used in modern computer systems. This permits reading the current internal/external temperature, programming the threshold setpoints, and configuring the device. Additionally, an interrupt is generated on the ALERT#/COMP# pin when temperature moves outside the preset threshold windows in either direction. A separ...