Dual port type semiconductor memory

Details Dual port type semiconductor memory Dual port type semiconductor memory

G - Physics

11

C

352/82

G11C 11/40 (2006.01) G11C 8/16 (2006.01)

Patent

CA 1205912

DUAL PORT TYPE SEMICONDUCTOR MEMORY ABSTRACT OF THE DISCLOSURE A dual port type semiconductor memory using a dynamic type random access memory (RAM) comprising; a plurality of word lines, a plurality of pairs of bit lines, a dynamic type RAM connected between the word lines and the bit lines at each intersection of these word lines and bit lines, a first column decoder connected to a writing-reading out bus through a pair of gates (G1) consisting of two transistors directly connected to the each bit lines, and a second column decoder connected to a reading out bus through a pair of gates (G2) consisting of four transistors. Gates of two of the four transistors are connected to each bit lines. The other two of the four transistors are connected to the reading out bus.

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