Semiconductor memory device having self-refresh function

Details Semiconductor memory device having self-refresh function Semiconductor memory device having self-refresh function

1993-06-29

1996-03-12

Zarabian, A.

Static information storage and retrieval

Read/write circuit

Data refresh

365236, G11C 700

Patent

active

054992133

ABSTRACT:
A semiconductor memory device has an oscillator unit for generating refresh pulses, a refresh address detection unit for detecting refreshed addresses and outputting a predetermined signal upon the completion of the refreshing of all addresses, and an output control unit for continuing a self-refresh mode to refresh all addresses according to the signal from the refresh address detection unit, before releasing the self-refresh mode in response to an external signal. Therefore, the refresh operation is continued until all cells are refreshed, thereby data stored in the semiconductor memory device is not lost and is correctly refreshed.

REFERENCES:
patent: 4989183 (1991-01-01), Kumanoya

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