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PST621 - (PST620 / PST621) System Reset

This page provides the datasheet information for the PST621, a member of the PST620 (PST620 / PST621) System Reset family.

Datasheet Summary

Description

Pin No.

1 2 3 4 5 6 7 8 Pin name VAC VCC1 VCC2 TC RE PSCONT CE GND Function Has +2.0V detection voltage to detect AC power supply and stable power supply primary side, for quick power outage detection.

Features

  • 1. Low current consumption 2. Capacitors (super capacitor, large capacity chemical capacitor) are used for back-up power supply, lowering system cost 3. Stable 1-chip microcomputer crystal oscillator rise time maintained with the built-in pulse shaver. 4. In addition to power outage detection for main power supply (+5V), there are built-in pins to detect AC power supply and +5V power supply primary side 5. Reset signal output by back-up power supply (super capacitor, large capacity chemical capa.

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Datasheet preview – PST621

Datasheet Details

Part number PST621
Manufacturer Mitsumi Electronics
File Size 226.75 KB
Description (PST620 / PST621) System Reset
Datasheet download datasheet PST621 Datasheet
Additional preview pages of the PST621 datasheet.

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Full PDF Text Transcription

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MITSUMI System Reset (with battery back-up) PST620, 621 System Reset (with battery back-up) Monolithic IC PST620, 621 Outline These ICs are part of the regular series of back-up ICs, and use capacitors (super capacitor, large capacity chemical capacitor) as back-up power supply. They control 1-chip microcomputer high-speed, low-speed, and stand-by modes (MNI control). These ICs also are capable of controlling data save in EPROM and other nonvolatile memories during power outage. Features 1. Low current consumption 2. Capacitors (super capacitor, large capacity chemical capacitor) are used for back-up power supply, lowering system cost 3. Stable 1-chip microcomputer crystal oscillator rise time maintained with the built-in pulse shaver. 4.
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