Zero consumption power-on-reset

Details Zero consumption power-on-reset Zero consumption power-on-reset

1997-01-30

1998-10-13

Cunningham, Terry

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327199, H03L 700

Patent

active

058217886

ABSTRACT:
A power-on-reset (P.O.R.) circuit produces a power-on-reset (P.O.R.) signal whose an amplitude tracks the voltage on a supply node until it exceeds a certain threshold. The circuit has a first monitoring and comparing circuit portion including at least a nonvolatile memory element having a control gate coupled to the supply node, a first current terminal coupled to a ground node, and a second current terminal coupled to a first node which is capacitively coupled to the supply node. The circuit further includes a second circuit portion that includes an intrinsically unbalanced bistable circuit, having a node that intrinsically is in a high state at power-on coupled to the first node that is intrinsically in a low state at power-on coupled to the input of an output buffer.

REFERENCES:
patent: 5343085 (1994-08-01), Fujimoro et al.
patent: 5347173 (1994-09-01), McAdams

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