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1. 发明授权

US06169689A MTJ stacked cell memory sensing method and apparatus 有权
标题翻译： MTJ堆叠式电池存储器感应方法及装置
公开(公告)号：US06169689A
公开(公告)日：2001-01-02
申请号：US09456615
申请日：1999-12-08
申请人： Peter K. Naji
发明人： Peter K. Naji
IPC分类号： G11C907
CPC分类号： G11C11/15 , G11C11/5607 , G11C2211/5615
摘要： Apparatus and method of reading the state of each cell in a stacked memory comprising stacks of cells in an addressable array with each stack including MTJ memory cells stacked together with current terminals connected in series, and including a first and second current terminals coupled through an electronic switch to a current source. Each stack includes 2n levels of memory. A voltage drop across an addressed stack is sensed. Reference voltages equal to the 2n memory levels are provided and the sensed voltage drop is compared to the reference voltages to determine the memory level in the addressed stack. Encoding apparatus is used to convert the voltage drop to a digital output signal.
摘要翻译：读取堆叠存储器中每个单元的状态的装置和方法，包括可寻址阵列中的单元堆叠，每个堆叠包括与串联连接的当前端子堆叠的MTJ存储器单元，并且包括通过电子耦合的第一和第二电流端子切换到当前源。每个堆栈包括2n级存储器。感测到寻址堆栈的电压降。提供等于2n个存储器电平的参考电压，并将所感测的电压降与参考电压进行比较，以确定寻址堆叠中的存储器电平。编码装置用于将电压降转换为数字输出信号。

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