Electrical fuse programming control circuit

Details Electrical fuse programming control circuit Electrical fuse programming control circuit

2005-01-11

2005-01-11

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

C327S526000

Reexamination Certificate

active

06842065

ABSTRACT:
An electrical fuse programming control circuit includes a plurality of fuse blocks each having a plurality of electrical fuses and an end fuse block. When all of the fuse blocks are programmed, the end fuse block is enabled and generates a programming control signal. The electrical fuse programming control circuit also includes a comparing unit that selectively transmits a fuse cutting signal to the plurality of fuse blocks in response to the programming control signal from the end fuse block. When programming of all of the fuse blocks is complete, reprogramming of the fuse blocks is not performed when an illegal program command is provided as an input.

REFERENCES:
patent: 4730129 (1988-03-01), Kunitoki et al.
patent: 5361001 (1994-11-01), Stolfa
patent: 5600277 (1997-02-01), Koelling
patent: 6621324 (2003-09-01), Fifield et al.
patent: 6703885 (2004-03-01), Fan et al.

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