Semiconductor device and control method of the same
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United States of America Patent
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Feb 15, 2011
Grant Date -
Dec 3, 2009
app pub date -
Jun 25, 2009
filing date -
Aug 30, 2005
priority date (Note) -
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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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