CMOS power-on reset circuit

Details CMOS power-on reset circuit CMOS power-on reset circuit

1989-11-28

1991-08-13

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307594, 307263, H03K 1722, H03K 1720

Patent

active

050398750

ABSTRACT:
A power-on reset circuit. The reset circuit provides an automatic reset pulse immediately after power-up. The supply voltage is provided to the reset circuit. An RC filter with a variable time constant provides a "hump" waveform which is coupled to a waveform shaper. The waveform shaper converts the hump voltage output from the RC filter into a reset signal. Latching mechanisms are included to prevent refiring of the reset signal.

REFERENCES:
patent: 3895239 (1975-07-01), Alaspa
patent: 4405871 (1983-09-01), Buurma et al.
patent: 4591745 (1986-05-01), Shen
patent: 4818904 (1989-04-01), Kobayashi

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