Semiconductor memory having redundancy circuit

Details Semiconductor memory having redundancy circuit Semiconductor memory having redundancy circuit

1995-03-21

1997-10-14

Yoo, Do Hyun

Static information storage and retrieval

Read/write circuit

Bad bit

365227, 36523003, 36523006, G11C 700, G11C 2900

Patent

active

056778805

ABSTRACT:
In a semiconductor memory, switch circuits are provided so as to inhibit voltage and signal supplies to each of the normal memory blocks when so required. On the other hand, a ROM is provided on the chip so as to store the address of a defective memory block which consumes an excessively large stand-by current when the semiconductor memory is in the stand-by mode. The switch circuits are controlled by the output of the ROM so as to inhibit the voltage and signal supply to the defective memory block. Then, a spare memory block which is substituted for the defective normal memory block receives the voltage and signal supply.

REFERENCES:
patent: 3755791 (1973-08-01), Arzubi
patent: 4604730 (1986-08-01), Yoshida et al.
patent: 4614881 (1986-09-01), Yoshida et al.
patent: 4656610 (1987-04-01), Yoshida et al.
patent: 4675849 (1987-06-01), Kiroshita
patent: 4688219 (1987-08-01), Takemae
patent: 4727516 (1988-02-01), Yoshida et al.
patent: 4750158 (1988-06-01), Giebel et al.
patent: 4783781 (1988-11-01), Awaya
patent: 4796233 (1989-01-01), Awaya et al.
patent: 4908798 (1990-03-01), Urai
patent: 5193071 (1993-03-01), Umina et al.
patent: 5262993 (1993-11-01), Horiguchi et al.
patent: 5265055 (1993-11-01), Horiguchi et al.
patent: 5315551 (1994-05-01), Hirayama
patent: 5323348 (1994-06-01), Mori et al.
patent: 5402376 (1995-03-01), Horiguchi et al.
Kokkonen, et al., "Memories and Redundancy Techniques", ISSCC Digest of Technical Papers, pp. 80-81, Feb. 1981.
Egawa, et al., "1-Mbit Full-Wafer MOS RAM", IEEE Journal of Solid State Circuits, vol. SC-15, No. 4, pp. 677-686, Aug. 1980.
MacDonald, et al., "Dynamic RAMs -200 Mbit Wafer Memory", ISSCC Digest of Technical Papers, pp. 240-241, Feb. 1989.

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