Semiconductor device and control method of the same

Static information storage and retrieval – Read/write circuit – Using different memory types

Reexamination Certificate

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Details

C365S185080, C365S185110, C365S218000

Reexamination Certificate

active

07889577

ABSTRACT:
A semiconductor device includes: a first sector (12) having data that are all to be erased and having flash memory cells; a second sector (14) having data that are all to be retained and having flash memory cells; a sector select circuit (16) selecting a pair of sectors from among sectors during erasing the data in the first sector, said pair of sectors being the first sector and the second sector; and an SRAM array (storage) (30) retaining the data of the second sector. The present invention can provide a semiconductor device in which a reduced number of sector select circuits is used so that the area of memory cell array can be reduced and provide a method of controlling the semiconductor device.

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patent: 2007/0028035 (2007-02-01), Nishihara
patent: 7169288 (1995-07-01), None
patent: 2000076116 (2000-03-01), None

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