Dynamic type semiconductor memory equipment

Details Dynamic type semiconductor memory equipment Dynamic type semiconductor memory equipment

1979-02-13

1981-10-06

Shaw, Gareth D.

Boots, shoes, and leggings

365222, G11C 700, G11C 800, G11C 1100

Patent

active

042939267

ABSTRACT:
A dynamic type semiconductor memory equipment operative in an asynchronous refresh mode in a data processing system including a CPU and a plurality of the memory equipments is so arranged that no busy signal is sent to the CPU through a common busy signal bus shared in common by all the memory equipments when any given memory equipment is in a refreshing operation state. Access request from the CPU to the memory equipment in the refresh mode is accepted and temporarily stored therein to be executed after completion of the refresh operation, while access request to other memory equipments in which no refresh operation takes place can be accepted to be executed without latency.

REFERENCES:
patent: 3760379 (1973-09-01), Nibby et al.
patent: 4084154 (1978-04-01), Panigrahi
IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, pp. 2897-2898.
IBM Technical Disclosure Bulletin, vol. 15, No. 1, Jun. 1972, pp. 257-258.
IBM Technical Disclosure Bulletin, vol. 19, No. 3, Aug. 1976, pp. 758-759.

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