Semiconductor memory apparatus and method for operating a semiconductor memory apparatus

摘要

Semiconductor memory apparatus and methods of operating the same are provided. The apparatus has at least one first sense amplifier for amplifying a voltage level which has been read from a memory cell when the semiconductor memory apparatus is in an active operating mode and at least one second sense amplifier for amplifying a voltage level which has been read from the memory cell when the semiconductor memory apparatus is in a refresh operating mode. The apparatus is designed such that either the first or the second sense amplifier can be placed in electrical contact with the memory cell and the capacitance of the second sense amplifier is lower than the capacitance of the first sense amplifier.