| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a semiconductor memory controller 2 and a semiconductor memory system 1 having an improved write speed. <P>SOLUTION: The semiconductor memory controller 2 controls a program for writing data in an interleaved manner to a semiconductor memory part 20 including two chips 21 and 22 composed of a large number of memory cells capable of storing 2-bit data in one memory cell.In the semiconductor memory controller, the writing program includes an upper page writing program and a lower page writing program different in program time, and after execution of the upper page and lower page writing programs in one chip, the upper page and lower page writing programs in the other chip are executed. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
