Patent ID: 6421272
Filing Date: 2002-07-16
Classification: G11C

Abstract:
A non-volatile semiconductor memory device programmable plural memory units simultaneously comprising:a first control line; a plurality of data holders connected to the first control line; a plurality of first data transfer lines connected to the plurality of data holders; a plurality of first memory cell units having a non-volatile semiconductor memory cell, connected to the plurality of first data transfer lines; a first data selection line connected to the plurality of first memory cell units; a second control line; a plurality of second data transfer lines; a plurality of switching elements connected to the second control line, inserted between the plurality of first data transfer lines and the plurality of second data transfer lines, causing to electrically connect the plurality of first transfer lines with the plurality of second data transfer lines; a plurality of second memory cell units having a non-volatile semiconductor memory cell, connected to the plurality of second data transfer lines; a second data selection line connected to the plurality of second memory cell units, wherein when writing data, the plurality of data holders transfer data to the plurality of second data lines and then the plurality of switching elements are shut off, the plurality of first memory cell units and the plurality of second memory cell units are simultaneously selected.