Title :
A 75MHz MRAM with Pipe-Lined Self-Reference Read Scheme for Mobile/Robotics Memory System
Author :
Kim, Tae Yun ; Kimura, Fuminori ; Matsui, Yusuke ; Yoshihara, Tsutomu ; Ooishi, Tsukasa ; Kihara, Yuji ; Hatanaka, Masahiro
Author_Institution :
Graduated Sch. of Inf., Production & Syst., Waseda Univ., Fukuoka
Abstract :
In this paper, we propose a pipe-lined self-reference read scheme of MRAM with read modify write which can make an operation period short. It also brings continuous read out accompanied with a mixed mat architecture. A new self-reference sense amplifier supported by a voltage transferred circuit has a wide margin. It is able to tolerate 50% MTJ resistance variation for sensing operation, and makes 75MHz operation at 1.2V Vcc possible. It brings a robust memory module for embedded memory system and suits mobile/robotics synchronous memory system
Keywords :
embedded systems; magnetic storage; 1.2 V; 75 MHz; MRAM; embedded memory system; mixed mat architecture; mobile memory system; pipelined self-reference read scheme; read modify write; robotics memory system; self-reference sense amplifier; synchronous memory system; voltage transferred circuit; Batteries; Circuits; Frequency; Mobile robots; Operational amplifiers; Production systems; Read-write memory; Robot sensing systems; Robustness; Voltage;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9163-2
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251679
