SEMICONDUCTOR MEMORY DEVICE HAVING DATA LOAD SIGNAL EXTERNALLY AND PREFETCH METHOD OF SERIAL DATA INTO PARALLEL DATA OF SEMICONDUCTOR MEMORY DEVICE

摘要

PURPOSE: A semiconductor memory device is provided, which has a data load signal externally indicating the conversion of serial data into parallel data, and a prefetch method of serial data into parallel data of the same semiconductor memory device is also provided. CONSTITUTION: According to the semiconductor memory device having a data load signal externally, a parallel loader signal generation circuit(550) receives the above data load signal in response to a data strobe signal and generates a parallel loader signal after a fixed time. And a data latch circuit(540) receives data in response to the above data strobe signal and then arranges them in parallel, and latches the parallel-arranged data in response to the parallel loader signal.