Refresh control for semiconductor memory device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 31, 2002
Grant Date -
Mar 7, 2002
app pub date -
Aug 24, 2001
filing date -
Sep 1, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the operation cycle, memory chip 200 initiates a refresh operation in sync with an ATD signal indicating change of address after a refresh timing signal RFTM has been issued. In snooze mode (low power consumption mode), a refresh operation is initiated in response to generation of a refresh timing signal RFTM, regardless of the ATD signal.
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