LM81 Datasheet - National Semiconductor

LM81 Serial Interface ACPI-Compatible Microprocessor System

The LM81 is a highly integrated data acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor-based system. In a PC, the LM81 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at an.

LM81 Features

* n Temperature sensing n 6 positive voltage inputs with scaling resistors for monitoring +5V, +12V, +3.3V, +2.5V, Vccp power supplies directly n 8-bit DAC output for controlling fan speed Applications n System Thermal and Hardware Monitoring for Servers and PCs n Office Electronics n Electronic Test

LM81_NationalSemiconductor.pdf