FLASH MEMORY DEVICE REDUCING NOISE OF COMMON SOURCE LINE, OPERATING METHOD THEREOF, AND MEMORY SYSTEM INCLUDING THAT

摘要

PURPOSE: A flash memory device reducing noise of a common source line, an operating method thereof, and a memory system including the same are provided to prevent the distribution width of a threshold voltage from being increased due to a noise voltage of a common source line. CONSTITUTION: In a flash memory device reducing noise of a common source line, an operating method thereof, and a memory system including the same, a plurality of memory cells are connected between a bit line and a common source line. Word lines are connected to the memory cells. A common source line feedback circuit(160) is connected to the common source line and detects the voltage of the common source line. A common source line feedback control logic(170) controls one voltage of a selection word line and a selection bit line.