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Semiconductor memory device capable of independent selection of normal and redundant memory cells after programming of redundant address
Semiconductor memory device capable of independent selection of normal and redundant memory cells after programming of redundant address
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机译:编程冗余地址后能够独立选择普通存储单元和冗余存储单元的半导体存储器件
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摘要
A redundancy determining unit pre-stores a defective memory cell address in a normal memory cell array, and selects a redundant memory cell instead of a normal memory cell in a normal operational mode. The redundancy determining unit selects a designated redundant memory cell row in response to an address signal when a test mode signal and a redundancy identification address signal are activated. If the test mode signal is activated whereas the redundancy identification address signal is inactivated, a replacement operation for the normal memory cell and the redundant memory cell is stopped.
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