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DS1236A Datasheet Micromanager Chip

Manufacturer: DALLAS

Overview: DS1236A MicroManager Chip www.dalsemi.com.

Datasheet Details

Part number DS1236A
Manufacturer DALLAS
File Size 320.45 KB
Description MicroManager Chip
Datasheet DS1236A_DALLAS.pdf

General Description

VBAT VCCO VCC GND PF PF WC/ SC RC IN NMI ST CEO CEI PBRST RST RST - +3-Volt Battery Input - Switched SRAM Supply Output - +5-Volt Power Supply Input - Ground - Power-Fail (Active High) - Power-Fail (Active Low) - Wake-Up Control (Sleep) - Reset Control - Early Warning Input - Non-Maskable Interrupt - Strobe Input - Chip Enable Output - Chip Enable Input - Pushbutton Reset Input - Reset Output (Active Low) - Reset Output (Active High) 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, a

Key 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.

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