Apparatus for controlling self-refresh period in memory device

Details Apparatus for controlling self-refresh period in memory device Apparatus for controlling self-refresh period in memory device

2007-05-08

2007-05-08

Ho, Hoai V. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S233100

Reexamination Certificate

active

11115444

ABSTRACT:
Disclosed is an apparatus for controlling a self-refresh period in a memory device capable of normally performing a self-refresh operation that is indispensable to the operation of a volatile memory device using a refresh period control even if the inner temperature of the memory device is changed. The apparatus determines different bank refresh periods according to the self-refresh entering time in a self-refresh mode, and thus the refresh operation can properly be performed to cope with the change of inner temperature of the memory device.

REFERENCES:
patent: 5488587 (1996-01-01), Fukumoto
patent: 6246619 (2001-06-01), Ematrudo et al.
patent: 6950364 (2005-09-01), Kim
patent: 19950010624 (1995-02-01), None

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