LM40 - National Semiconductor

LM40 Hardware Monitor

The LM40 is a hardware monitor that measures 3 temperature zones, 5 voltages and has a single-wire interface compatible with National Semiconductor’s SensorPath bus. SensorPath data is pulse width encoded, thereby allowing the LM40 to be easily connected to many general purpose micro-controllers. Several National Semiconductor Super I/O products include a fu.

Features

n SensorPath Interface — 2 hardware programmable addresses n Voltage Monitoring — 9-bit Σ∆ ADC Typical Application 20068401 SensorPath™ is a trademark of National Semiconductor Corporation © 2004 National Semiconductor Corporation DS200684 www.national.com LM40 Connection Diagram TSSOP-14 Order Number LM40CIMT LM40CIMTX Package Marking LM40 CIMT LM40 CIMT NS Package Number MTC14C MTC14C Transport Media 94 units per rail 2500 units in tape and reel 20068402 Top View National Package Number MTC14C Pin Description Pin Number 1, 14 2 3 Pin Name NC GND V+/+3.3V_SBY Description No Conne.