| 摘要 |
A method for powering up an integrated circuit and circuit for implementing the method. A first charging current is used to slowly charge a capacitor used in the integrated circuit upon connecting the power. A power-up signal is provided to initialize digital circuitry until the first charging current raises the voltage of the capacitor above a threshold value. Once a capacitor is charged to another predetermined threshold, a second charging current is activated. The two charging currents are thereafter used as the total charging current on the capacitor. If the capacitor is grounded, the initial power-up scheme is re-initiated.
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