The MC1066 is a serially programmable temperature sensor optimized for monitoring modern high performance CPUs with on–board integrated temperature sensing diodes. Temperature data is converted from the CPU’s diode outputs and made available as an 8–bit digital word.

Features
• 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
• 3.0–5.5 V 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 MC1066s May Share the Same Bus
• Low Standby Power Mode
• Low Power: 70 µA (max) Operating, 10 µA (max) Standby Mode
• 16–Pin Plastic QSOP Package

Typical Applications
• Thermal Protection For Intel “Deschutes” Pentium II and Other High Performance CPUs with Integrated On–Board Diode - No Sensor Mounting Problems!
• Accurate Temperature Sensing From Any Silicon Junction Diode
• Thermal Management in Electronic Systems: Computers, Network Equipment, Power Supplies