Microcomputer for flash memory rewriting

Details Microcomputer for flash memory rewriting Microcomputer for flash memory rewriting

2011-04-26

2011-04-26

Kim, Matt (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711SE12001, C714S018000

Reexamination Certificate

active

07934050

ABSTRACT:
A microcomputer and method are provided capable of restarting a rewrite program without the need for changing a mode using an external terminal when rewriting nonvolatile memory fails. A CPU of a microcomputer executes a rewrite program to clear FLASH status 0 of flash memory and rewrite all areas in it. The CPU finally writes a rewrite completion code to FLASH status 0. The CPU executes a determination program to read FLASH status 0 of the flash memory. The CPU reads ID status information when read data does not match the rewrite completion code. The CPU re-executes the rewrite program when the data matches ID status information.

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Notice of Reason for Refusal mailed Mar. 30, 2010 in corresponding Japanese Patent Application No. 2007-200839 (and English translation).

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