发明名称 SEMICONDUCTOR MEMORY DEVICE, FUSE BOX CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT
摘要 PROBLEM TO BE SOLVED: To provide a semiconductor memory device, a fuse box circuit, and a semiconductor integrated circuit, by which the number of fuses in a fuse circuit is reduced and a control circuit is eliminated. SOLUTION: The semiconductormemory device is configured so that a memory coincidence circuit discriminates whether or not memory information set to each semiconductor memory device is matched with external memory information. When they are matched with each other, a repair discrimination circuit discriminates whether or not an access address for making access to 1st memory coincides with a repair address for indicating a defective cell of the 1st cell, and when they are matched, it makes access to a 2nd memory. In this configuration of the memory, the fuse box circuit 1 for repair can be used in common. COPYRIGHT: (C)2006,JPO&NCIPI
申请公布号 JP2005353247(A) 申请公布日期 2005.12.22
申请号 JP20040176104 申请日期 2004.06.14
申请人 RICOH CO LTD 发明人 KAIHARA MITSUO
分类号 G11C11/413;G11C16/04;G11C29/00;G11C29/04;(IPC1-7):G11C29/00 主分类号 G11C11/413
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