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1. (WO2017151567) CONTENT AWARE REFRESH

Pub. No.:    WO/2017/151567    International Application No.:    PCT/US2017/019859
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: G06F 13/16
G11C 11/406
Applicants: UNIVERSITY OF ROCHESTER
WANG, Shibo
BOJNORDI, Mahdi Nazm
GUO, Xiaochen
IPEK, Engin
Inventors: WANG, Shibo
BOJNORDI, Mahdi Nazm
GUO, Xiaochen
IPEK, Engin
Title: CONTENT AWARE REFRESH
Abstract:
A dynamic random access memory (DRAM) content aware refresh system includes a central processing unit (CPU) communicatively coupled to a memory controller having a content aware refresh unit. A main memory includes DRAM organized into a plurality of refresh groups. Each refresh group of the plurality of refresh groups including a different portion of the main memory DRAM is operatively coupled to the content aware refresh unit such that each refresh group of the plurality of refresh groups is refreshed by the memory controller at a selected one of a plurality of refresh rates based on a density of a bit state within each refresh group. A method for refreshing a dynamic random access memory (DRAM) is also described.