Semiconductor memory device having an improved refresh operation

Details Semiconductor memory device having an improved refresh operation Semiconductor memory device having an improved refresh operation

1991-11-26

1993-10-05

Bowler, Alyssa H.

Static information storage and retrieval

Read/write circuit

Data refresh

36523003, G11C 700, G11C 1300

Patent

active

052511774

ABSTRACT:
An improved arrangement for refreshing a semiconductor memory device comprising a plurality of memory blocks is disclosed. In the memory device, word lines of all memory blocks are commonly controlled by one controller. One of the memory blocks is selected to be subject to the write/read operation. The refresh is performed in the remaining memory blocks while the selected memory block is written or read. The period of time required for the refresh can be decreased.

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