Static information storage and retrieval – Read/write circuit – Differential sensing
Reexamination Certificate
2006-01-03
2006-01-03
Elms, Richard (Department: 2824)
Static information storage and retrieval
Read/write circuit
Differential sensing
C365S191000
Reexamination Certificate
active
06982914
ABSTRACT:
A semiconductor memory device includes a replica circuit including a plurality of replica cells (RMC) having the same elements as those of memory cells in a memory array and outputting signals with levels in the stage number to a common replica bit line, and a sense amplifier control circuit for receiving a signal of the replica bit line to control a timing of a signal SAE for starting a sense amplifier circuit. The replica circuit includes a switching circuit (SW) for switching the stage number of the replica cells to be activated among the plurality of replica cells in a programmable manner.
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patent: 6490214 (2002-12-01), Kawasumi
patent: 6556472 (2003-04-01), Yokozeki
patent: 6603687 (2003-08-01), Jun et al.
Ohtsuki Hirohisa
Suzuki Toshikazu
Elms Richard
Hamre Schumann Mueller & Larson P.C.
Luu Pho M.
Matsushita Electric - Industrial Co., Ltd.
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