Nonvolatile memory device and operating method of the same

A method of operating a. nonvolatile memory, the method comprising:

• providing write commands to a plurality of memory banks;
• determining whether the write command provided to the plurality of memory banks is simultaneously provided to each memory bank of the plurality of memory banks;
• and
• controlling a plurality of write block circuits, connected to the plurality of memory banks, based on the determined result,
• wherein each of the plurality of write block circuits comprise a plurality of write drivers which provides a write current to the plurality of memory banks, and
• controlling the plurality of write block circuits comprises:
• determining a number of memory banks, of the plurality of memory banks, that are simultaneously provided with the write command, and determining a number of the plurality of write drivers that are activated based on a predetermined reference value.

A. non-volatile memory device, comprising:

• a plurality of memory banks, each including an array of phase change memory cells divided into a plurality of blocks;
• and
• a plurality of write drivers for writing to the phase change memory cells of the plurality of memory banks,
• wherein a maximum number of blocks of the plurality of blocks that are simultaneously written to by the plurality of write drivers is determined based on a number of phase change memory cells, of the plurality of memory banks, that is in an idle state.