Semiconductor storage device including a controller for continuously writing data to and erasing data from a plurality of flash memories

A semiconductor storage device, comprising:

• a plurality of nonvolatile memories for storing data therein;
• and
• a processor coupled to provide a plurality of write instructions to said plurality of nonvolatile memories continuously,
• wherein said plurality of write instructions, beginning with a first write instruction thereof, is sequentially fed to said plurality of nonvolatile memories in a manner such that each such write instruction is provided to a respective nonvolatile memory, without first having to wait for those ones of said plurality of nonvolatile memories which each earlier received a write instruction taken from said plurality of write instructions, to get ready to accept a new write instruction, said plurality of write instructions being provided to said nonvolatile memories, respectively, after all of said plurality of nonvolatile memories are initially made ready for accepting new write instructions, and
• wherein after said plurality of nonvolatile memories has been provided with said plurality of write instructions, said processor determines whether or not those of said plurality of nonvolatile memories which received said plurality of write instructions have become individually ready to accept a new instruction, and said processor provides a new write instruction to respective ones of those of said nonvolatile memories which have been determined to be ready to accept a new instruction.