Semiconductor memory device having interface units memorizing av

Details Semiconductor memory device having interface units memorizing av Semiconductor memory device having interface units memorizing av

1994-10-28

1996-10-08

Yoo, Do Hyun

Static information storage and retrieval

Read/write circuit

Bad bit

36518907, 365201, 3652257, 36523003, 36523008, G11C 800, G11C 2900

Patent

active

055638325

ABSTRACT:
A semiconductor memory device has address buffer circuits operative to produce address predecoded signals for enabling an addressing system to selectively make memory cell sub-arrays accessible, a prohibit circuit operative to fix address predecoded signal or signals to inactive level for prohibiting the associated memory cell sub-arrays from a service as a data storage and an information storage circuit for storing pieces of test information indicative of the memory cell sub-arrays prohibited from the service, and a manufacturer easily groups the products by the available memory cell sub-arrays after package of the products.

REFERENCES:
patent: 5287326 (1994-02-01), Hirata
patent: 5293348 (1994-03-01), Abe
patent: 5392242 (1995-02-01), Koike
patent: 5426606 (1995-06-01), Takai

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