PST620 - (PST620 / PST621) System Reset

Mitsumi Electronics

PST620 Datasheet Preview — Preview of PST620 PDF

Datasheet Details

Part number	PST620
Manufacturer	Mitsumi Electronics
File Size	226.75 KB
Description	(PST620 / PST621) System Reset
Datasheet	PST620_MitsumiElectronics.pdf

PST620 Product details

Description

PST620 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.+5V main power supply Back-up power supply (back-up capacitor connected) Pulse width setting pin for pulse shaver (capacitor and resistor connected) Reset output Pulse shaver ON/OFF switching High : OFF Low : ON Chip enable signal output GND

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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Published: Nov 22, 2009 |