Microcomputer with programmable ROM
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United States of America Patent
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-
May 6, 1997
Grant Date -
N/A
app pub date -
Jun 1, 1994
filing date -
Jun 4, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a microcomputer with a programmable ROM, there is provided an external pin at which a mode select signal is entered so as to select one of three modes, including a MCU mode in which an application system is controlled by an application program which has been stored in the programmable ROM, a PROM mode in which the application program is written into the programmable ROM, and an inline mode in which predetermined data is written to a part of the programmable ROM with the microcomputer mounted on a user system.
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