Dynamic random access memory device having a self refresh mode

Static information storage and retrieval – Read/write circuit – Data refresh

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

365191, 365193, G11C 700

Patent

active

053216628

ABSTRACT:
An improved dynamic random access memory (DRAM) having self refresh mode is provided. After initiation of a self refresh term Ts, and in a first term Tc1 and a last term Tc2, a concentrated refresh using a refresh clock signal /REFS having a short period Pc is carried out for all rows in a memory cell array. During the remaining term, a normal self refresh operation using a signal /REFS having a long period Ps is carried out. Stored data is maintained effectively because the refresh interval of each row in a memory cell array is prevented from exceeding significantly a predetermined time length Ps.

REFERENCES:
patent: 4691303 (1987-09-01), Churchward et al.
patent: 4901283 (1990-02-01), Hanbury et al.
patent: 4933907 (1990-06-01), Kumanoya et al.
patent: 4935900 (1990-06-01), Ohsawa
patent: 5031147 (1991-07-01), Maruyama et al.
"Mitsubishi LSI's", pp. 1/28-10/28, 20/28, Oct. 1991.
Digest of Technical Papers, International Solid-State Circuits Conference, pp. 252-253, 1985 no month.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dynamic random access memory device having a self refresh mode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dynamic random access memory device having a self refresh mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic random access memory device having a self refresh mode will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1254558

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.