Patent ID: 6850435
Filing Date: 2005-02-01
Classification: G11C

Abstract:
1. A nonvolatile semiconductor memory comprising: a memory cell; a bit line connected to one end of the memory cell; and a data circuit which is connected to the bit line and in which program data or read data concerning the memory cell is temporarily stored, wherein the data circuit includes: first, second, and third data storage units; a first data transfer circuit connected between the first and third data storage units; and a second data transfer circuit connected between the second and third data storage units, the first data storage unit is connected to the bit line, and the second data storage unit includes a function of forcibly changing a value of a first data stored in the first data storage unit based on a second data stored in the second data storage unit, and the third data storage unit stores a third data different from the first data while the second data storage unit forcibly changes the value of the first data.