Apparatus for and method of refreshing MOS memory

Details Apparatus for and method of refreshing MOS memory Apparatus for and method of refreshing MOS memory

1981-01-19

1983-09-06

Hecker, Stuart N.

Static information storage and retrieval

Read/write circuit

Data refresh

G11C 700

Patent

active

044033087

ABSTRACT:
A random access memory requiring refreshing is refreshed during refresh phases of operating cycles of the memory including write or read phases, i.e., useful phases. A selection phase is initiated currently with a useful phase at the beginning of each cycle. During the selection phase, a determination is made as to whether the memory is to enter a refresh phase during the cycle. In response to the determination during the selection phase indicating that the memory is to enter the refresh phase, the refresh phase in initiated. In one embodiment, the useful phase is terminated before the refresh phase starts. In a second embodiment, the useful phase is completed even though a refresh phase is selected, and then the refresh phase is executed.

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