PST621 Datasheet - Mitsumi Electronics

PST621 (PST620 / PST621) System Reset

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 settin.

PST621 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 ma

PST621 Datasheet (226.75 KB)