DS1236A集成电路（IC）的监控器规格书PDF中文资料

DESCRIPTION

The DS1236A MicroManager Chip provides all the necessary functions for power supply monitoring, reset control, and memory backup in microprocessor-based systems. A precise internal voltage reference and comparator circuit monitor power supply status. When an out-of-tolerance condition occurs, the microprocessor reset and power-fail outputs are forced active, and static RAM control unconditionally write protects external memory.

FEATURES

◾ Holds microprocessor in check during power transients

◾ Halts and restarts an out-of-control microprocessor

◾ Monitors pushbutton for external override

◾ Warns microprocessor of an impending power failure

◾ Converts CMOS SRAM into nonvolatile memory

◾ Unconditionally write protects memory when power supply is out of tolerance

◾ Consumes less than 100 nA of battery current at 25°C

◾ Controls external power switch for high current applications

◾ Accurate 10 power supply monitoring

◾ Optional 5 power supply monitoring designated DS1236A-5

◾ Provides orderly shutdown in nonvolatile microprocessor applications

◾ Supplies necessary control for low-power “stop mode” in battery operated hand-held applications

◾ Standard 16-pin DIP or space-saving 16-pin SOIC

◾ Optional industrial temperature range -40°C to +85°C