Capacitance sensing method of reading a ferroelectric RAM

摘要

A capacitance sensing method of reading a FeRAM (Ferroelectric Random Access Memory). First, enable the word line for turning on the first and the second switches. Then, enable the latch sense amplifier for changing the voltages of the bit line and the inverse bit line according to the first and the second ferroelectric capacitors. Then, output the data stored in the FeRAM according to the voltage difference between the bit line and the inverse bit line.