Electronic control unit and method for storing rewrite count of

Details Electronic control unit and method for storing rewrite count of Electronic control unit and method for storing rewrite count of

1999-06-16

2000-04-04

Phan, Trong

Static information storage and retrieval

Floating gate

Data security

36518508, 36518533, G11C 1604

Patent

active

060469374

ABSTRACT:
An electronic control unit includes a flesh memory for storing control programs and data. A count information storage region for retaining a rewrite count of the flash memory is set up at a plurality of consecutive addresses in the flash memory. Each time rewriting processing is carried out by a CPU for the flash memory in the electronic control unit, a data-unwritten address in the count information storage region is selected in ascending order of addresses starting from the top address thereof, and numeric value data representing a rewrite count of the flash memory is written to the address thus selected.

REFERENCES:
patent: 5572466 (1996-11-01), Sukegawa
patent: 5828977 (1998-10-01), Hayashi et al.

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