NCP1232 - Microprocessor Monitor

General Description

Push-button Reset Input.

A debounced active-low input that ignores pulses less than 1 msec in duration and is guaranteed to recognize inputs of 20 msec or greater.

Time Delay Set.

Key Features

Precision Voltage Monitor (Adjustable +4.5 V or +4.75 V).
Reset Pulse Width (250 msec Min).
No External Components.
Adjustable Watchdog Timer (150 msec, 600 msec or 1.2 sec).
Debounced Manual Reset Input for External Override.

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NCP1232 microprocessor monitor by ON - Datasheet Preview

Datasheet Details

Part number	NCP1232
Manufacturer	ON
File Size	94.94 KB
Description	Microprocessor Monitor
Datasheet	NCP1232 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP1232 Microprocessor Monitor The NCP1232 is a fully-integrated processor supervisor. It provides three important functions to safeguard processor functionality: precision power on/off reset control, watchdog timer and external reset override. On power-up, the NCP1232 holds the processor in the reset state for a minimum of 250 msec after VCC is within tolerance to ensure a stable system start-up. Microprocessor functionality is monitored by the on- board watchdog circuit. The microprocessor must provide a periodic low-going signal on the ST input. Should the processor fail to supply this signal within the selected time-out period (150 msec, 600 msec or 1200 msec), an out- of- control processor is indicated and the NCP1232 issues a processor reset as a result.