Microchip Technology TC1068
The TC1068 is a serially programmable temperature sensor optimized for monitoring modern high performance CPUs with on-board integrated thermal diodes. This permits reading the current internal/external temperature, programming the threshold setpoints, and configuring the device. Communication with the TC1068 is accomplished via the standard System Management Bus (SMBus) commonly used in modern computer systems.FEATURES
s s s s s s s s s s s 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 Up To Nine TC1068s 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 PackageGENERAL DESCRIPTION
Temperature data is converted from the CPU’s thermal diode outputs and made available as an 8-bit digital word. Additionally, an interrupt is generated on the ALERT#/COMP# pin when temperature moves outside the preset threshold windows in either direction. A Standby command may be sent via the SMBus or by signaling the STBY# input pin to activate the low-power Standby mode. Registers can be accessed while in Standby mode.