Semiconductor memory apparatus having sense amplifiers connected

Details Semiconductor memory apparatus having sense amplifiers connected Semiconductor memory apparatus having sense amplifiers connected

1996-01-16

1997-07-01

Nelms, David C.

Static information storage and retrieval

Read/write circuit

Differential sensing

365222, 365233, G11C 700

Patent

active

056445431

ABSTRACT:
An improved memory driving method for a semiconductor memory apparatus capable of achieving a series of data accesses by connecting two sense amplifying units to a pair of bit lines, which includes the steps of a first step which senses a data of a memory cell selected by a word line driver and stores the thusly sensed data into a first sense amplifying unit in accordance with a switching operation of a first switch; a second step which selects another memory cell during a sensing operation of the first sense amplifying unit and stores a data of the memory cell into a second sense amplifying unit in accordance with a switching operation of a second switch; and a third step which records data stored in the first sense amplifying unit and second sense amplifying unit into selected memory cells, respectively, in accordance with a certain line and a switch signal, so that data access time of the system can be advantageously reduced.

REFERENCES:
patent: 4811302 (1989-03-01), Koishi
patent: 5307314 (1994-04-01), Lee

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