PST620
PST620 is System Reset manufactured by Mitsumi Electronics.
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 microputer 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 microputer crystal oscillator...