SEMICONDUCTOR SYSTEM AND METHOD OF PROGRAMMING DATA

PURPOSE: A semiconductor system and a data programming method are provided to reduce the number of error bits by programming a corrected first bit value and a second bit value after a first bit value is corrected by using an ECC(Error Correction Code). CONSTITUTION: It is determined whether a threshold voltage of a memory cell programmed with a first bit value of write data is out of a first voltage range(S100). If the threshold voltage of the memory cell is out of the first voltage range, the first bit value is corrected by an ECC(S200). The corrected first bit value and a second bit value of the write data are programmed in a memory cell(S400).