Field programmable gate array with spare circuit block

Details Field programmable gate array with spare circuit block Field programmable gate array with spare circuit block

1993-11-02

1995-10-17

Limanek, Robert P.

Active solid-state devices (e.g., transistors, solid-state diode

Gate arrays

With particular signal path connections

257210, 257665, 257202, 326101, 326 10, H03K 19173, H03K 19177, H01L 2170, H01L 2700

Patent

active

054593425

ABSTRACT:
A field programmable gate array, comprises: a plurality of circuit blocks each having logic circuits; at least one spare circuit block having logic circuits; a set of interconnections including at least one interconnection for connecting at least one of the circuit blocks and the at least one spare circuit programmably; and at least one connecting element disposed on the interconnection of the set of interconnections which turns its status from a turned-on state to a turned-off state or vice versa when programmed. When any one of the circuit blocks is defective, since the defective circuit block can be replaced with the spare circuit block, it is possible to retain any desired functions of the logic circuits by programming the connecting means, thus improving the production yield of the field programmable gate array and thereby reducing the manufacturing cost thereof.

REFERENCES:
patent: 5166557 (1992-11-01), Chen et al.
patent: 5237219 (1993-08-01), Cliff
patent: 5290734 (1994-03-01), Boardman et al.
patent: 5293133 (1994-03-01), Birkner et al.
patent: 5313119 (1994-05-01), Cooke et al.
patent: 5328865 (1994-07-01), Boardman et al.
patent: 5349248 (1994-09-01), Parlour et al.
Hatori, F., et al. "Introducing Redundancy in Field Programmable Gate Arrays", IEEE 1993 custom integrated circuits conference, pp. 711-714.

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