| 摘要 |
A fuse circuit 1 comprises an electrically programmable fuse 10 and a data latch circuit 11 to hold programmed fuse data. In the data latch circuit 11, prior to programming, a node FUADD is precharged to "H" by a precharge circuit 14 and preset at "H" as the result of the logical product of a fail address FAADD and a latch signal LATCHp by a preset circuit 12 when the fuse 10 needs to be programmed. A programming selecting circuit 13 monitors the node FUADD to select whether to perform or not to performance the programming of the fuse 10. Accordingly, efficient electric programming control becomes possible without using a dedicated register to hold a fuse address to be programmed.
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