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    • 9. 发明专利
    • Resistive ram
    • 电阻RAM
    • JP2012203946A
    • 2012-10-22
    • JP2011066183
    • 2011-03-24
    • Toshiba Corp株式会社東芝
    • UDA MIZUKIAZUMA TOMOAKIKUROSAWA TOMOKI
    • G11C13/00
    • G11C8/10G11C8/08G11C13/0002G11C13/0004G11C13/0007G11C13/0011G11C13/0023G11C13/0069G11C2013/0078G11C2213/71G11C2213/72
    • PROBLEM TO BE SOLVED: To accurately change resistance of a memory cell.SOLUTION: A resistive RAM 1 comprises: multiple bit lines; multiple word lines; a memory cell array MA that includes multiple memory cells MC in which the bit lines and word lines are arranged at intersection parts and each of which includes a variable resistance element VR and a diode Di that are connected in series between the bit line and the word line; a control circuit that writes data in a selected memory cell by applying reverse bias to the diode Di; and a current limit circuit 25 that limits current flowed to the selected memory cell at the time of writing. The current limit circuit 25 controls the current flowed to a selected bit line so as not to exceed a second compliance current after adding a leakage current from a non-selected memory cell, which is connected to the selected bit line, to a predetermined first compliance current.
    • 要解决的问题:准确地改变存储单元的电阻。 解决方案:电阻式RAM1包括:多个位线; 多个字线 存储单元阵列MA,其包括多个存储单元MC,其中位线和字线布置在交叉部分,并且每个存储单元MC包括串联连接在位线和字之间的可变电阻元件VR和二极管Di 线; 控制电路,通过向二极管Di施加反向偏压来将数据写入选定的存储单元; 以及限制在写入时流向所选择的存储单元的电流的限流电路25。 电流限制电路25控制流向所选位线的电流,以便将来自连接到所选位线的未选择存储单元的泄漏电流加到预定的第一顺从性之后不超过第二顺从电流 当前。 版权所有(C)2013,JPO&INPIT