Semiconductor memory device capable of multidirection data acces

Details Semiconductor memory device capable of multidirection data acces Semiconductor memory device capable of multidirection data acces

1994-09-21

1995-10-31

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

36518901, 36518904, 36518907, 36523001, G11C 1300

Patent

active

054635829

ABSTRACT:
A semiconductor memory device enables multi-direction data access at a high speed with a simple circuit construction. The semiconductor memory device includes a plurality of word lines, a plurality of bit lines and a plurality of memory cells connected to the bit lines and word lines. A row decoder, connected to the word lines, selects one of the word lines in response to a row address signal. A selection circuit includes a plurality of column decoders and a direction decoder. Each column decoder receives a portion of a column address signal and the direction decoder selects one of three directions in response to a direction address signal. Each column decoder is selectively enabled based upon the direction address signal. Output circuitry outputs data read out from bit lines selected by the enabled column decoders. Thus, three-dimensional bit map data can be stored in two dimensions.

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