| 摘要 |
<p>The present invention relates to a semiconductor memory device and an operating method thereof which comprise: a memory cell array having a plurality of memory cells; a surrounding circuit unit for performing a program voltage applying operation, first and second verifying operations, and a D trap voltage applying operation about the memory cells; and a control logic for controlling the surrounding circuit unit to perform the D trap voltage applying operation according to the first verifying operation by controlling the surrounding circuit unit.</p> |
