MEMORY CONTROLLER, MEMORY SYSTEM, AND CONTROL METHOD FOR MEMORY SYSTEM

摘要

PURPOSE: A memory controller, a memory system, and a control method for the memory system are provided to access a semiconductor memory unit which is capable of storing multi-bit data in a single memory cell by a memory interleaving mode. CONSTITUTION: A NAND I/F(19) controls the interface with a semiconductor memory unit(20) having multiple chips consisting of multiple memory cells. A CPU(14) repeatedly executes the writing program about all pages of N kind types within the memory cell belonging to one chip among the chips. The above CPU executes the writing program about all pages of N kind types within the memory cell belonging to the chip of the other one to the interleaved mode.