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US 5,508,638 AGranted
Low current redundancy fuse assembly
AssigneeMicron Technology, Inc.
InventorsTimothy B. Cowles, Steven G. Renfro
Life of this patent
Estimating the term…
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AssigneeMicron Technology, Inc.
InventorsTimothy B. Cowles, Steven G. Renfro
Estimating the term…
In a microcircuit device such as a memory chip, where a bank of fuse-controlled latch pulse routing-circuits are used to program redundant circuits or other programming options with every memory cycle or multiple thereof, the amount of current drawn by every fuse-control circuit is reduced by controlling each bank of circuits with a bank-enabling, fuse-programmed circuit between the latch pulse source and the bank of fuse-controlled programing circuits, and by adding a second fuse into each programing circuit; whereby, the bank of programming circuits can be enabled by alternately blowing one of two fuses in the bank-enabling circuit, and each programming logic can set by alternately blowing one of its pair of fuses thus cutting off any current path through the programing circuit regardless of the programing state of the circuit.
A bank of programming logic circuits for enabling and disabling elements of an array of microcircuit devices, wherein each of said programming logic circuits comprises:
A bank of programming logic circuits for enabling and disabling elements of an array of microcircuit devices, wherein each of said programming logic circuits comprises:
A circuit for enabling and disabling elements of a microcircuit array comprises:
Dependencies are inferred from the claim text.