Memory with RAM cells and ROM cells

Details Memory with RAM cells and ROM cells Memory with RAM cells and ROM cells

1983-08-01

1986-03-11

Fears, Terrell W.

Static information storage and retrieval

Read only systems

Semiconductive

365189, 365230, G11C 1300

Patent

active

045758190

ABSTRACT:
A memory circuit which has both RAM cells and ROM cells along a common row has a ROM cell which is directly connected to the word line for the row but which is not enabled when a logic state opposite to that represented by the ROM cell is attempted to be written into the ROM cell. Consequently the only word line required for enabling the ROM cells is the word line which enables the RAM cells.

REFERENCES:
patent: 3753242 (1973-08-01), Townsend

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