Microcomputer with nonvolatile memory protected against false erasing or writing
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United States of America Patent
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Nov 2, 2004
Grant Date -
Sep 11, 2003
app pub date -
Sep 5, 2002
filing date -
Mar 7, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microcomputer includes a nonvolatile memory for storing contents that can be erased from and written to the nonvolatile memory electrically when an erasing/writing voltage is supplied to the nonvolatile memory, and a processor for executing a program stored in the nonvolatile memory. The microcomputer also includes a setting element for setting a plurality of conditions for erasing contents from or writing contents into the nonvolatile memory, and an erasing/writing voltage supply enabler for enabling the erasing/writing voltage to be supplied to the nonvolatile memory when all of the plurality of conditions are satisfied.
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