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

2000-03-28

Phan, Trong

Static information storage and retrieval

Floating gate

Data security

36518511, 36518529, 365218, G11C 1604

Patent

active

060440147

ABSTRACT:
An electronic control unit includes a flash memory as a nonvolatile memory, which is capable of erasing its storage contents block by block, for storing control programs and data. An erasure processing is carried out for the storage content in each of the blocks identified by an erasure command received from an external device, and a rewrite processing is carried out to replace the erased content with a new content received from the external device. The number of the erasure processing is counted only once when the first one of the erasure commands is received for a plurality of blocks, as long as the control unit is held operative after its initial condition.

REFERENCES:
patent: 5828977 (1998-10-01), Hayashi et al.
patent: 5920501 (1999-07-01), Norman
patent: 5930167 (1999-07-01), Lee et al.
patent: 5963474 (1999-10-01), Uno et al.

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