Ferroelectric random access memory sensing scheme

摘要

Semiconductor memory devices and methods of operating the same are provided. The method of operation may include the steps of selecting a ferroelectric memory cell for a read operation, coupling a first pulse signal to interrogate the selected ferroelectric memory cell, the selected ferroelectric memory cell outputting a memory signal to a bit-line in response to the first pulse signal, coupling the memory signal to a first input of a sense amplifier via the bit-line, electrically isolating the sense amplifier from the selected ferroelectric memory cell, and enabling the sense amplifier for sensing after the sense amplifier is electrically isolated from the selected ferroelectric memory cell. Other embodiments are also disclosed.