| 摘要 |
As a defective contact recovery elements, a stacked semiconductor device include a parallel arrangement system in which signal paths are multiplexed, and a defective contact recovery circuit operable to switch a signal path into an auxiliary signal path. The parallel arrangement system is used in a case where the number of signals is small and a very high speed operation is required because of a serial data transfer. The defective contact recovery circuit is used in a case where the number of signals is large because of a parallel data transfer.
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