Semiconductor memory

Details Semiconductor memory Semiconductor memory

2008-05-27

2008-05-27

Nguyen, Tuan T. (Department: 2824)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S203000, C365S228000, C365S229000, C365S230060, C711S106000

Reexamination Certificate

active

11641767

ABSTRACT:
After a refresh operation, a word control circuit holds the selection state of a word line selection signal line selected in each memory block corresponding to a refresh address. Further, in response to an access request, the word control circuit unselects only a word line selection signal line of a memory block selected by an external address corresponding to this access request. In each memory block, the word line selection signal line once selected is not unselected until the access request is received, so that the frequency of unselection and selection of the word line selection signal lines can be lowered. Consequently, a charge/discharge current of the word line selection signal lines can be reduced, which can reduce current consumption of a semiconductor memory.

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