Apparatus for stabilizing an antifuse used for a memory device

Details Apparatus for stabilizing an antifuse used for a memory device Apparatus for stabilizing an antifuse used for a memory device

1998-12-07

2000-03-21

Zarabian, A.

Static information storage and retrieval

Read/write circuit

Having fuse element

365 96, G11C 700

Patent

active

060410094

ABSTRACT:
An antifuse stabilizing apparatus for a memory device stabilizes a programming process of an antifuse. A serial antifuse block has a plurality of antifuses being interconnected in series, and is programmed by applying a voltage being higher than an appropriate applying voltage of each antifuse. An antifuse programming block applies a program voltage being higher than the appropriate applying voltage to both ends of each antifuse in order to program the antifuses. A high voltage portion and a low voltage portion check a coupling state of the antifuses of the serial antifuse block. The applying voltage higher than the appropriate applying voltage is a voltage to be applied to both ends of each antifuse by the antifuse programming block. As a result, all circuits of using an antifuse whose appropriate applying voltage is lower than a power-supply voltage of the peripheral circuit can use the antifuse stably without using an additional circuit.

REFERENCES:
patent: 5334880 (1994-08-01), Abadeer et al.
patent: 5412593 (1995-05-01), Magel
patent: 5426614 (1995-06-01), Harward
patent: 5689455 (1997-11-01), Mullarkey et al.
patent: 5706238 (1998-01-01), Cutter et al.

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