描述 Description

The STM6905 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to five system power supply voltages. This device is targeted at applications such as set-top boxes (STBs), portable, battery-powered systems, networking and communication systems.

特性 Features

? Quintuple voltage monitoring

? Accurate ±1.8 across temperature voltage threshold (±1 at 25 °C)

? Primary supply (VCC) monitor. Fixed (factory - programmed) reset thresholds: 3.078 V to 2.866 V

? Second fixed (V2IN) monitor. Fixed (factoryprogrammed) reset thresholds: 2.333 V to 1.050 V

? Three additional adjustable supply monitor inputs (externally adjustable)

? 600 mV internal reference

? RST output (open drain)

? Output guaranteed for VCC ≥ 0.8 V

? Reset delay time (TREC) on power-up: 210 ms (typ)

? Manual reset input (MR)

? Low supply current of 12 μA (typ)

? Power supply voltage 0.8 V to 5.5 V

? RoHS compliant (green package)

? 8-pin MSOP/TSSOP

? Operating temperature: –40 °C to 85 °C (industrial grade)

Applications

? Set-top boxes

? Multi-voltage systems

? Cable/satellite applications

? Computer systems

? Data storage equipment