Device and method for repairing a semiconductor memory

Details Device and method for repairing a semiconductor memory Device and method for repairing a semiconductor memory

2005-06-21

2005-06-21

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C711S134000

Reexamination Certificate

active

06910152

ABSTRACT:
A block repair device is disclosed for use in a semiconductor memory having an array including a defective cell and a redundant row. The block repair device includes a set of fuses, antifuses, or flash EEPROM cells to store a block repair configuration that determines the dimensions (e.g., the number of rows and columns spanned) of a repair block used to repair the defective cell. Routing circuitry, such as multiplexer circuitry, in the block repair device is directed by the stored block repair configuration to output selected row and column address bits from received row and column addresses in a selected ratio. Comparison circuitry in the block repair device then compares the row and column address bits output by the routing circuitry with a stored portion of the address of the defective cell that defines the repair block. When a match occurs, the comparison circuitry implements a block repair by activating the redundant row and by causing data to be written to or read from the activated redundant row.

REFERENCES:
patent: 4459685 (1984-07-01), Sud et al.
patent: 4601019 (1986-07-01), Shah et al.
patent: 5179536 (1993-01-01), Kasa et al.
patent: 5381370 (1995-01-01), Lacey et al.
patent: 5422850 (1995-06-01), Sukegawa et al.
patent: 5452251 (1995-09-01), Akaogi et al.
patent: 5513144 (1996-04-01), O'Toole
patent: 5523975 (1996-06-01), Reddy
patent: 5528539 (1996-06-01), Ong et al.
patent: 5548225 (1996-08-01), Rountree et al.
patent: 5576633 (1996-11-01), Rountree et al.
patent: 5594693 (1997-01-01), Rouy et al.
patent: 5604702 (1997-02-01), Tailliet
patent: 5648934 (1997-07-01), O'Toole
patent: 5684740 (1997-11-01), Hirata
patent: 5703817 (1997-12-01), Shiratake et al.
patent: 5706292 (1998-01-01), Merritt
patent: 5729551 (1998-03-01), Park et al.
patent: 5751647 (1998-05-01), O'Toole
patent: 5835425 (1998-11-01), Berger
patent: 5867504 (1999-02-01), Pascucci
patent: 5914907 (1999-06-01), Kobayashi et al.
patent: 6006313 (1999-12-01), Fukumoto
patent: 6018811 (2000-01-01), Merritt
patent: 6038682 (2000-03-01), Norman
patent: 6154851 (2000-11-01), Sher et al.
patent: 6199177 (2001-03-01), Blodgett
patent: 6282670 (2001-08-01), Rezaul Islam et al.
patent: 6571352 (2003-05-01), Blodgett
patent: 2001/0016893 (2001-08-01), Merritt
patent: 2001/0044916 (2001-11-01), Blodgett
patent: 2002/0019961 (2002-02-01), Blodgett
patent: 2003/0154422 (2003-08-01), Blodgett
patent: 2004/0010737 (2004-01-01), Merritt

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