| 摘要 |
A semiconductor memory and a control method thereof are provided to reduce current consumption by disabling cell repair judgement configuration during a refresh operation so as to minimize a refresh current. In a semiconductor memory having a plurality of normal cells and a spare cell to replace a defective cell, a refresh address counting unit(200) counts a refresh address. A first pre-decoding unit(300) pre-decodes the refresh address or a normal address. A second pre-decoding unit(400) pre-decodes the normal address. An output control unit blocks the output of the second pre-decoding unit according to the input of a refresh signal. A repair set(500) judges whether to repair the address output from the second pre-decoding unit.
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