Microcomputer using nonvolatile semiconductor memory to store us

Details Microcomputer using nonvolatile semiconductor memory to store us Microcomputer using nonvolatile semiconductor memory to store us

1998-05-20

2000-11-14

Lane, Jack A.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711103, G06F 1200

Patent

active

061483621

ABSTRACT:
The microcomputer according to the present invention is prepared with differing address space for use during normal operations and during rewrite control, whereby, when modifying a rewrite control program, the production of new user code/data can be avoided for cases in which there are actually no modifications of the user code/data. In other words, the microcomputer switches between user ROM during normal operation and rewrite control ROM during rewrite control, and user code/data and rewrite control program are arranged in differing address space.

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