Semiconductor memory

Details Semiconductor memory Semiconductor memory

2006-01-24

2006-01-24

Nguyen, Van Thu (Department: 2824)

Static information storage and retrieval

Addressing

Plural blocks or banks

Reissue Patent

active

RE038944

ABSTRACT:
A semiconductor memory such as a dynamic RAM having memory mats each divided into a plurality of units or sub-memory mats. Each sub-memory mat comprises: a memory array having sub-word lines and sub-bit lines intersecting orthogonally and dynamic memory cells located in lattice fashion at the intersection points between the intersecting sub-word and sub-bit lines; a sub-word line driver including unit sub-word line driving circuits corresponding to the sub-word lines; a sense amplifier including unit amplifier circuits and column selection switches corresponding to the sub-bit lines; and sub-common I/O lines to which designated sub-bit lines are connected selectively via the column selection switches. The sub-memory mats are arranged in lattice fashion. Above the sub-memory mats is a layer of: main word lines and columns selection signal lines intersecting orthogonally, the main word lines having a pitch that is an integer multiple of the pitch of the sub-word lines, the column selection signal lines having a pitch that is an integer multiple of the pitch of the sub-bit lines; and main common I/O lines to which designated sub-common I/O lines are connected selectively.

REFERENCES:
patent: 4590588 (1986-05-01), Itoh et al.
patent: 4658377 (1987-04-01), McElroy
patent: 5140550 (1992-08-01), Miyaoka et al.
patent: 5262999 (1993-11-01), Etoh et al.
patent: 5274595 (1993-12-01), Seok et al.
patent: 5282175 (1994-01-01), Fujita et al.
patent: 5297102 (1994-03-01), Tanizaki
patent: 5301142 (1994-04-01), Suzuki et al.
patent: 5404338 (1995-04-01), Murai et al.
patent: 5414660 (1995-05-01), Sugibayashi et al.
patent: 5448520 (1995-09-01), Shimohigashi et al.
patent: 5471430 (1995-11-01), Sawada et al.
patent: 5734619 (1998-03-01), Numata et al.
patent: 5777942 (1998-07-01), Dosaka et al.
patent: 6307217 (2001-10-01), Ikeda et al.
patent: A-1-245489 (1989-09-01), None
patent: 2-18784 (1990-01-01), None
patent: A-2-18785 (1990-01-01), None
patent: 2-143982 (1990-06-01), None
patent: A-2-158995 (1990-06-01), None
patent: 2-246089 (1990-10-01), None
patent: 3-154287 (1991-07-01), None
patent: A-4-59712 (1992-09-01), None
patent: A-5-54634 (1993-03-01), None
patent: 5-546634 (1993-03-01), None
patent: 5-226613 (1993-09-01), None
patent: 6-196656 (1994-07-01), None
patent: 6-318391 (1994-11-01), None

Affiliated with

Also associated with

Rating

Semiconductor memory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3576114