Patent ID: 6785158
Filing Date: 2004-08-31
Classification: G11C

Abstract:
A memory write control device that controls writing of bit information in a plurality of nonvolatile memory cells, each one of the nonvolatile memory cells located at a crossing point of a plurality of bit-lines and a plurality of word-lines arranged in a matrix form, by controlling a direction of a current supplied to each of the word-lines, the memory write control device comprising:a current supply control unit that receives a current generated by a current source and a mode signal indicating the memory cells are used as one of a RAM and a ROM, and outputs the received current in accordance with the mode signal; a first current direction control unit that supplies the current output by the current supply control unit to each of the bit-lines in a predetermined direction; and a second current direction control unit that supplies the current output by the current supply control unit to the word-lines and controls a direction of the current supplied to each of the word-lines.