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    | Partname: | PST621DFT |  
    | Description: | System reset(with battery back-up) |     
    | Manufacturer: |  |  
    | Package: | SOP-8C |  
    | Pins: | 8 |  
    | Oper. temp.: | -20 to 70 |  
    | Datasheet: | PDF (193K). Click here to download *) |  
    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.  |  
    
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    Click here to download PST621DFT Datasheet*) | 
  
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