Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

1983-03-23

1987-01-06

Heckler, Thomas M.

Static information storage and retrieval

Read/write circuit

Bad bit

371 10, G11C 1140

Patent

active

046352325

ABSTRACT:
A semiconductor memory device is disclosed, which comprises a main memory, a decoder for selecting the main memory, an auxiliary memory, transistors connected between the auxiliary memory and the decoder for selecting the auxiliary memory according to the output of the decoder, and circuits for controlling the transistors. The transistors render the main memory inoperative when the auxiliary memory is rendered operative.

REFERENCES:
patent: 4365319 (1982-12-01), Takemae
patent: 4392211 (1983-07-01), Nakano et al.
patent: 4485459 (1984-11-01), Venkateswaran
patent: 4538245 (1985-08-01), Smarandoiu et al.
Kokkonen et al., "Redundancy Techniques for Fast Static RAMs", ISSCC Digest of Technical Papers, pp. 80-81, Feb. 18, 1981.

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