公开(公告)号：US20160336066A1

公开(公告)日：2016-11-17

申请号：US14877740

申请日：2015-10-07

Applicant: MACRONIX INTERNATIONAL CO., LTD.

Inventor： YU-YU LIN ,  FENG-MIN LEE

IPC: G11C13/00

CPC classification number: G11C13/0069 ,  G11C13/0007 ,  G11C13/0064 ,  G11C13/0097 ,  G11C2013/0073

Abstract: Circuitry coupled to a programmable element comprising metal oxide is configured to execute a program-verify operation including: an initial cycle of a program operation and a verify operation, and subsequent cycles. The initial cycle includes an initial instance of the program operation to establish a cell resistance of the programmable element, and an initial instance of the verify operation to determine whether the cell resistance of the memory cell is within the target resistance range. At least one of the subsequent cycles includes an additional pulse having a second polarity to the programmable element, and a subsequent instance of the verify operation. The first polarity of the initial program pulse and the second polarity of the additional pulse have opposite polarities. A subsequent instance of the program operation includes applying a subsequent program pulse having the first polarity to the programmable element.

Abstract translation: 耦合到包括金属氧化物的可编程元件的电路被配置为执行程序验证操作，包括：程序操作和验证操作的初始循环以及随后的循环。 初始周期包括用于建立可编程元件的单元电阻的程序操作的初始实例，以及用于确定存储器单元的单元电阻是否在目标电阻范围内的验证操作的初始实例。 后续周期中的至少一个包括对可编程元件具有第二极性的附加脉冲以及验证操作的后续实例。 初始编程脉冲的第一极性和附加脉冲的第二极性具有相反的极性。 随后的程序操作实例包括将具有第一极性的后续编程脉冲施加到可编程元件。