Invention Grant
US07940553B2 Method of storing an indication of whether a memory location in phase change memory needs programming
有权
存储相变存储器中的存储器位置是否需要编程的指示的方法
- Patent Title: Method of storing an indication of whether a memory location in phase change memory needs programming
- Patent Title (中): 存储相变存储器中的存储器位置是否需要编程的指示的方法
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Application No.: US12346459Application Date: 2008-12-30
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Publication No.: US07940553B2Publication Date: 2011-05-10
- Inventor: Patrick Wu , Richard Fackenthal , Ferdinando Bedeschi , Meenatchi Jagasivamani , Enzo Michele Donze
- Applicant: Patrick Wu , Richard Fackenthal , Ferdinando Bedeschi , Meenatchi Jagasivamani , Enzo Michele Donze
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; William J. Pigott
- Main IPC: G11C11/00
- IPC: G11C11/00
Abstract:
A phase change memory includes a float buffer which stores the result of a comparison between the current state of data in the phase change memory cells and an intended next state of each of those cells. The float buffer indicates which cells need to be programmed in order to achieve the new states and which cells happen to already be in the new states. Then, after programming of the cells, the float buffer indicates which cells still need to be programmed. Thus, a control stage uses the information in the float buffer to program only those cells whose states need to be changed.
Public/Granted literature
- US20100165714A1 METHOD OF STORING AN INDICATION OF WHETHER A MEMORY LOCATION IN PHASE CHANGE MEMORY NEEDS PROGRAMMING Public/Granted day:2010-07-01
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