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PST574L Datasheet(PDF) 5 Page - Mitsumi Electronics, Corp. |
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PST574L Datasheet(HTML) 5 Page - Mitsumi Electronics, Corp. |
5 / 5 page MITSUMI System Reset PST574 Application circuits 1. Normal hard reset Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. 2. Battery checker (LED ON for high voltage) Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. 3. Battery checker (LED ON for low voltage) Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. 4. Hysteresis voltage UP method When increasing hysteresis voltage for stable system operation, determine RH as follows and connect externally. However, ICCH is -5000PPM/°C, so perform temperature compensation at RH when using over a wide temperature range. Hysteresis voltage UP amount ( Vsup) is Vsup . =. RH ICCL Total hysteresis voltage ( Vstotal) is Vstotal . =. Vs + Vsup (Operation will be destabilized if RH is raised too much.) Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. |
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