Block selection circuit

Details Block selection circuit Block selection circuit

2006-06-06

2006-06-06

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Redundant

C327S525000, C365S225700

Reexamination Certificate

active

07057441

ABSTRACT:
Provided is directed to a block selection circuit, comprising a reference fuse block by copying fuse blocks to output a reference signal later than or at the same time to decision signals which are outputted from fuse blocks which distinguish whether an external address is a repair address or not according to fuse cutting states and an external address, capable of improving speed of the block selection circuit by removing delay units by means of generating a spare row enable signal later than decision signals using the reference signal, and available to assure stability of an operation because the reference fuse block is similarly changeable, although outputting speeds of decision signals from fuse blocks are variable according to a process, a temperature, a driving voltage, and so on.

REFERENCES:
patent: 6865123 (2005-03-01), Lee

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