SEMICONDUCTOR MEMORY DEVICE CAPABLE OF COMPENSATING FOR THE TIME DELAY DIFFERENCE OF A DATA SIGNAL BETWEEN A DATA TRAINING MODE AND A NORMAL MODE

摘要

PURPOSE: A semiconductor memory device is provided to remove the time delay difference of data between a data training mode and a normal mode by including a variable delay unit to output a signal inputted at the data training mode and the normal mode corresponding to preset delay time.;CONSTITUTION: A data training unit(110) outputs a write data driving signal by inputting a data signal. A variable delay unit(120) responds to a data training signal inputted from a memory controller(200) and outputs data signals by delaying a plurality of write data driving signals corresponding to the delay time. A data input and output unit(130) outputs a plurality of write data driving signals by inputting a plurality of data signals. The data input and output unit outputs a plurality of data signals by inputting lead data driving signals.;COPYRIGHT KIPO 2011