MicroManager

Overview

Technical Documents

Ordering Info

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Status

All versions are No Longer Available. See Ordering Information for recommended replacements.

Description

The DS1238A MicroManager 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. The DS1238A also provides early warning detection of a user-defined threshold by driving a non-maskable interrupt.

Data Sheet

Download	Rev 1	(PDF, 224kB)
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Key Features

Holds microprocessor in check during power transients
Halts and restarts an out-of-control microprocessor
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 200nA of battery current
Controls external power switch for high current applications
Debounces pushbutton reset
Accurate 10% power supply monitoring
Optional 5% power supply monitoring designated DS1238A-5
Provides orderly shutdown in microprocessor applications
Pin-for-pin compatible with MAX691
Standard 16-pin DIP or space-saving 16-pin SOIC
Optional industrial temperature range -40°C to +85°C
Underwriters Laboratories (UL) Recognized

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 1; 1999-11-18
This page last modified: 2002-03-13