US Patent 9799402 Nonvolatile memory device and program method thereof

A nonvolatile memory system includes first and second nonvolatile memory devices and a memory controller configured to control the first and second nonvolatile memory devices through one channel. During a program operation, the memory controller transmits first signals, for setting first page data up in the first nonvolatile memory device, to the first nonvolatile memory device through the channel. While the first nonvolatile memory device sets up the first page data in response to the first signals, the memory controller transmits second signals, for setting second page data up in the second nonvolatile memory device, to the second nonvolatile memory device.