发明授权
US5508954A Method and apparatus for reduced fatigue in ferroelectric memory 失效
铁电存储器疲劳减少的方法和装置

Method and apparatus for reduced fatigue in ferroelectric memory
摘要:
A method and apparatus for programming ferroelectric memory cells which reduces polarizability fatigue effects of switching polarization of the ferroelectric devices associated with the memory cells such as ferroelectric capacitors and transistors. Alteration of the pulse width duty cycle associated with signals used to switch ferroelectric device polarization is shown to reduce polarizability fatigue of the ferroelectric material thereby increasing the useful life of ferroelectric memory cells. Methods and apparatus for producing a signal pulse duty cycle in the range 2-30% is disclosed and shown to improve the useful life of the ferroelectric material.
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