Semiconductor device comprising a function change over switching circuit having a non-volatile storage device
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United States of America Patent
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Jan 24, 1995
Grant Date -
N/A
app pub date -
Jun 24, 1993
filing date -
Jul 3, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A semiconductor device in which not only mask options of a mask ROM can be provided in the form of a PROM but the chip size can be reduced, and an electronic appliance using the same. The semiconductor device comprises a nonvolatile storage device (12) writable electrically, and switching circuits (18, 20) controlled on the basis of data stored in the nonvolatile storage device to perform wiring switching. Because wirings A, B1 and B2 are switched on the basis of data stored in the nonvolatile storage device, for example, optional functions of a one-chip micro computer can be provided in the form of a PROM by using the wiring switching.
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