Trigger Circuit of a Column Redundant Circuit and Related Column Redundant Device
AssigneeEtron Technology, Inc.
InventorJen-Shou Hsu
Life of this patent
Estimating the term…
Abstract
A trigger circuit for triggering corresponding memory cells of a column redundant circuit includes a determining circuit for generating a determining signal according to an accessed row address, and a plurality of comparing circuits jointly electrically connected to the column redundant circuit for receiving the determining signal, each of the comparing circuits selectively generating a trigger signal to the column redundant circuit according to the determining signal and an accessed column address.
Claims18
A trigger circuit for triggering corresponding memory cells of a column redundant circuit, the trigger circuit comprising:
- a determining circuit for generating a determining signal according to an accessed row address;
- and
- a plurality of comparing circuits jointly electrically connected to the column redundant circuit for receiving the determining signal, each of the comparing circuits selectively generating a trigger signal to the column redundant circuit according to the determining signal and an accessed column address.
A column redundant device comprising:
- a column redundant circuit comprising:
- a first column redundant memory cell;
- and
- a second column redundant memory cell;
- and
- a trigger circuit for triggering the first or second column redundant memory cell of the column redundant circuit respectively for replacing a first failed memory cell or a second failed memory cell when a memory accessing the first memory cell or the second failed memory cell, the first failed memory cell comprising a first failed column address and a first failed row address, the second failed memory cell comprising a second failed column address and a second failed row address, the trigger circuit comprising:
- a determining circuit for generating a determining signal according to an accessed row address;
- and
- a first comparing circuit and a second comparing circuit, jointly electrically connected to the column redundant circuit for receiving the determining signal respectively, the first comparing circuit generating a first trigger signal to the column redundant circuit according to the determining signal and an accessed column address, the second comparing circuit generating a second trigger signal to the column redundant circuit according to the determining signal and the accessed column address.
Dependencies are inferred from the claim text.