MEMORY SYSTEM INCLUDING NONVOLATILE MEMORY AND MEMORY CONTROLLER AND PROGRAMMING METHOD FOR PROGRAMMING DATA INTO NONVOLATILE MEMORY

According to example embodiments, a nonvolatile memory includes a plurality of memory cells and a plurality of bit lines respectively connected to the plurality of memory cells, and a method of programming the nonvolatile memory includes loading data to the nonvolatile memory for a first program operation, starting the first program operation on the plurality of memory cells, based on the loaded data, and loading at least two page data to the nonvolatile memory before the first program operation is completed. The at least two page data include first page data and second page data for a second program operation following the first program operation. The first page data and the second page data respectively correspond to a first bit and a second bit to be programmed at a memory cell among the plurality of memory cells.