PRE-DECODER OF SEMICONDUCTOR MEMORY DEVICE

摘要

PURPOSE: A pre-decoder of a semiconductor memory device is provided to minimize signal delay during refresh mode conversion. CONSTITUTION: The pre-decoder generates a pre-decoding signal by receiving a normal address signal while a row address setup signal is applied, and generates a pre-decoding signal by receiving a refresh address signal while a refresh command signal is applied. A switch part(100) switches the above normal address signal, and a latch part latches the above switched normal address signal and generates an inversion signal. A decoding part(300) pre-decodes the latched normal address signal and the inversion signal. The refresh address signal and the refresh command signal are inputted to the above decoding part, and a pre-decoding signal for refresh is generated.