公开(公告)号：US09953728B2

公开(公告)日：2018-04-24

申请号：US15216589

申请日：2016-07-21

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Emmanuelle J Merced Grafals ,  Brent Buchanan ,  Le Zheng

IPC: G11C11/00 ,  G11C29/00 ,  G11C13/00 ,  H01L45/00

CPC classification number: G11C29/789 ,  G11C13/0021 ,  H01L45/04 ,  H01L45/16

Abstract: Examples include a resistive random access memory (RRAM) array to support a redundant column. Some examples include an RRAM cell at a cross point of a column line and a row line of the RRAM array. A first column line may be coupled to a first input of a first current-steering multiplexer and the first current-steering multiplexer may have an output coupled to a first current sense amplifier and a select input coupled to a first column select signal. A second column line may be coupled to a second input of the first current-steering multiplexer and coupled to a first input of a second current-steering multiplexer. The second current-steering multiplexer may have an output coupled to a second current sense amplifier and a select input coupled to a second column select signal. A third column line may be coupled to a second input of the second current-steering multiplexer.