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PST621 - (PST620 / PST621) System Reset

Download the PST621 datasheet PDF. This datasheet also covers the PST620 variant, as both devices belong to the same (pst620 / pst621) system reset family and are provided as variant models within a single manufacturer datasheet.

General 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.

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (PST620_MitsumiElectronics.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number PST621
Manufacturer Mitsumi Electronics
File Size 226.75 KB
Description (PST620 / PST621) System Reset
Datasheet download datasheet PST621 Datasheet

📁 Similar Datasheet

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PST600F System Reset Monolithic IC Mitsumi

Other Datasheets by Mitsumi Electronics

Part Number Description
PST620 (PST620 / PST621) System Reset
PST623 System Reset
PST611 System Reset Monolithic IC PST611
PST35XX (PST35XX / PST36XX) IC for CMOS System Reset
PST36XX (PST35XX / PST36XX) IC for CMOS System Reset

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.

View original datasheet text
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.