Device information writing circuit

Details Device information writing circuit Device information writing circuit

2006-03-14

2006-03-14

Ho, Hoai (Department: 2827)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S230030, C365S230040

Reexamination Certificate

active

07012844

ABSTRACT:
A device information writing circuit features a redundancy fuse set for selectively performing a repair operation or a device information writing operation. The repair operation is performed with a fuse set having the least frequency of use from the redundancy fuse sets of a row address. Additionally, the number of fuse sets is reduced because the device information including the LOT number, the wafer number and row/column coordinates is written as different data in each bank by a fuse cutting method.

REFERENCES:
patent: 2002/0031017 (2002-03-01), Yumoto
patent: 2002/0044489 (2002-04-01), Kim
patent: 2003/0072199 (2003-04-01), Honda et al.
patent: 2003/0076714 (2003-04-01), Suzuki
patent: 2003/0103394 (2003-06-01), Koshikawa
patent: 2003/0117869 (2003-06-01), Hidaka

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