Current-sensing power-on reset circuit for integrated circuits

Details Current-sensing power-on reset circuit for integrated circuits Current-sensing power-on reset circuit for integrated circuits

1993-10-26

1995-03-07

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327 77, 327 78, 327198, 327399, H03K 1722

Patent

active

053961153

ABSTRACT:
The power-on reset circuit of this invention includes a current-sensing circuit, a pulse-stretching circuit, and a voltage-reference circuit. The voltage-reference circuit consists, for example, of one N-Channel and one P-Channel MOS transistor. The circuit of this invention uses a static voltage reference comprised of CMOS transistors to detect the power-up condition. The circuit of this invention improves detection of a transient power-supply voltage Vcc loss and detects that power-supply voltage transient on both rising and falling edges.

REFERENCES:
patent: 3895239 (1975-07-01), Alaspa
patent: 4053340 (1985-03-01), Linder
patent: 5039875 (1991-08-01), Chang
patent: 5187389 (1993-02-01), Hall et al.
patent: 5302861 (1994-04-01), Jelinek
patent: 5319255 (1994-06-01), Garverick et al.
patent: 5329171 (1994-07-01), Shimizu et al.

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