Power-up reset circuit

Details Power-up reset circuit Power-up reset circuit

1989-07-31

1991-01-08

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307594, 307597, 307603, 307362, H03K 5153, H03K 1720, H03K 1722, H03K 17687

Patent

active

049838571

ABSTRACT:
A circuit for generating a reset signal on chip power-up includes two field effect devices connected between a power supply voltage and the input to an inverter. A capacitor is connected between the inverter input and the low supply voltage. Current flows through the field effect devices to charge the transistor only when the supply voltages are greater than the sum of the absolute values of their threshold voltages. The output of the inverter is used as the chip power-up reset signal.

REFERENCES:
patent: 4405871 (1983-09-01), Buurma et al.
patent: 4409501 (1983-10-01), Eickerman et al.
patent: 4633107 (1986-12-01), Norsworthy
patent: 4634905 (1987-01-01), Campbell, Jr.
patent: 4717840 (1988-01-01), Ouyang et al.
patent: 4746822 (1988-05-01), Mahoney

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