Semiconductor integrated circuit including fuse circuit and...

Details Semiconductor integrated circuit including fuse circuit and... Semiconductor integrated circuit including fuse circuit and...

2006-11-15

2009-02-10

Yoha, Connie C (Department: 2827)

Static information storage and retrieval

Read only systems

Fusible

C365S225700, C365S189070, C365S189080, C365S189090

Reexamination Certificate

active

07489536

ABSTRACT:
According to an embodiment of the invention, a fuse circuit includes: a pair of fuses; and a comparator circuit connected with nodes on one end side of the fuses through separating switches. The nodes on one end side of the pair of fuses are further connected with a ground terminal through blow switches. The other ends of the pair of fuses are connected with, for example, a power supply potential. Each blow switch is turned ON at the time of blowing the pair of fuses to supply a current to the pair of fuses. Each separating switch separates the comparator circuit from the nodes on one end side at the time of blowing the pair of fuses. One of the pair of fuses is certainly blown upon programming.

REFERENCES:
patent: 6608498 (2003-08-01), Khoury
patent: 7110313 (2006-09-01), Huang
patent: 7221210 (2007-05-01), Parker et al.
patent: 2001-118996 (2001-04-01), None
patent: 3307349 (2002-05-01), None

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