SEMICONDUCTOR MEMORY DEVICE AND METHOD PREVENTING READ-FAIL THEREOF

摘要

PURPOSE: A memory system and a reading fail preventing method thereof are provided to prevent read fail by a soft program, thereby improving the performance and reliability of the memory system. CONSTITUTION: A memory system(10) comprises a flash memory(100) and a memory controller(200). The flash memory performs write, read, and erase operation according to the control of the memory controller. The flash memory stores read count data(105). The read count data is stored in the meta domain or user data area of the flash memory. The memory controller applies a read command, an address, and a control signal to the flash memory in the reading operation process. The flash memory receives the read command and the address from the memory controller. The flash memory supplies a read voltage to a corresponding word line.