Block specific spare circuit

Details Block specific spare circuit Block specific spare circuit

1995-06-07

1996-11-19

Westin, Edward P.

Electronic digital logic circuitry

Reliability

Redundant

326 13, 365200, 371 103, H03K 19003, G06F 1116

Patent

active

055766331

ABSTRACT:
A circuit for selecting a block spare in a semiconductor device is designed with a programmable circuit (14), storing an internal address and producing an address match signal AM and a block select signal BS in response to first (A) and second (B) address signals and the internal address. A global spare circuit (28) produces a global spare select signal (GSS), in response to the address match signal. A block spare circuit (34) produces a block spare select signal (BSS), in response to the global spare select signal and the block select signal.

REFERENCES:
patent: 5058070 (1991-10-01), Faber et al.
patent: 5060197 (1991-10-01), Park et al.
patent: 5347484 (1994-09-01), Kwong et al.

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