General Description
●The LM79 is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system. In a PC, the LM79 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at any time, and programmable WATCHDOG limits in the LM79 activate a fully programmable and maskable interrupt system with two outputs.
●Features
●Temperature sensing
●5 positive voltage inputs
●2 op amps for negative voltage monitoring
●3 fan speed monitoring inputs
●Input for additional temperature sensors
●Chassis Intrusion Detector input
●WATCHDOG comparison of all monitored values
●POST code storage RAM
●ISA and I2C™ Serial Bus interfaces
●Key Specifications
●Voltage monitoring accuracy ±1% (max)
●Temperature Accuracy −10˚C to +100˚C ±3˚C (max)
●Supply Voltage 5V
●Supply Current Operating: 1 mA typ
● Shutdown: 10 µA typ
●ADC Resolution 8 Bits
●Applications
●System Hardware Monitoring for Servers and PCs
●Office Electronics
●Electronic Test Equipment and Instrumentation
