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US 2004/0170073 A1Published application
Semiconductor storage unit
OwnerTetsuya Kanekoinventor
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OwnerTetsuya Kanekoinventor
Estimating the term…
Provided is a semiconductor storage unit in which semiconductor storage unit manufacturers can protect data in their products after the products are put on the market. The semiconductor storage unit includes: a user memory that serves to one of reading and writing of data and is accessible upon a first instruction; a redundant memory that serves to one of reading and writing of data and is accessible upon a second instruction; an input control circuit for outputting a signal after analyzing the instructions that are inputted to the input interface; an access control circuit for allowing access to the user memory or the redundant memory; an address decoder that outputs, a signal for choosing a memory cell of the user memory or of the redundant memory to the user memory or to the redundant memory; and an output control circuit for reading data of the user memory or the redundant memory.
A semiconductor storage unit comprising:
A semiconductor storage unit in which data is electrically written and from which data is electrically erased, comprising:
Dependencies are inferred from the claim text.