Semiconductor memory device which can provide required data flexibly under simplified control and operating method therefor
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United States of America Patent
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-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Mar 23, 1993
filing date -
Mar 24, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved video RAM having two data registers for holding data of each row in a memory cell array 1. A transfer gate circuit transfers alternately data of each row of the memory cell array 1 to the two data registers. On the other hand, since a switching circuit selects data held in the two data registers alternately and provide the same serially. In addition, length of data to be provided can be controlled externally. When a special high speed data reading such as oblique reading is required, timing control of externally applied control signals can be simplified.
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