Integrated circuit with programmable fuse array

Details Integrated circuit with programmable fuse array Integrated circuit with programmable fuse array

2005-04-05

2005-04-05

Hoang, Huan (Department: 2818)

Static information storage and retrieval

Read/write circuit

Having fuse element

C365S200000, C365S096000

Reexamination Certificate

active

06876594

ABSTRACT:
An integrated circuit (IC). The integrated circuit comprises an array (14) of data cells arranged in a plurality of rows and a plurality of columns. Each of the data cells comprises an electrically programmable fuse (40), and each electrically programmable fuse comprises a current path for providing a first digital state when the current path is left intact and for providing a second digital state when the current path is destroyed. Each row of the plurality of rows comprises at least one cell reserved for providing a protection indicator for the row, wherein the protection indicator is selected from a set consisting of read protection and write protection. The integrated circuit also comprises control circuitry (12) for selectively destroying the programmable fuse in selected ones of the data cells in a programmation mode. The integrated circuit also comprises control circuitry (12) for reading selected ones of the data cells in a read mode.

REFERENCES:
patent: 4577294 (1986-03-01), Brown et al.
patent: 4872140 (1989-10-01), Graham et al.
patent: 6094386 (2000-07-01), Kohyama
patent: 6577156 (2003-06-01), Anand et al.

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