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PST573 Datasheet(PDF) 5 Page - Mitsumi Electronics, Corp. |
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PST573 Datasheet(HTML) 5 Page - Mitsumi Electronics, Corp. |
5 / 6 page MITSUMI System Reset PST573 Timing Chart 6 5 7 4 3 2 1 0 VCC/VOUT (V) RESET VCC VOUT VS VS (CPU) Time ON OFF Undefined Application circuits 1. Normal hard reset Delay time (tpLH) . =. CL RL ln VCC-0.2 +0.025 (mS) Vscpu CL : µF RL : k Ω Vs cpu : Reset threshold voltage of CPU, MPU, etc. Voltage: V Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. [] 2. Manual reset added Note 1: Use RL, CL and Rm to prevent manual switch chattering. Note that Rm should be set to the following conditions. Rm < = 1/20RL Note 2: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. 3. Battery checker (LED ON for high voltage) Note: Connect a capacitor between IC pins 1 and 2 if VCC line impedance is high. |
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