Title
MTJ variation monitor-assisted adaptive MRAM write.
Abstract
Spin-transfer torque random access memory (STT-RAM) and magnetoelectric random access memory (MeRAM) are promising non-volatile memory technologies. But STT-RAM and Me RAM both suffer from high write error rate due to thermal fluctuation of magnetization. Temperature and wafer-level process variation significantly exacerbate these problems. In this paper, we propose a design that adaptively selects optimized write pulse for STT-RAM and MeRAM to overcome ambient process and temperature variation. To enable the adaptive write, we design specific MTJ-based variation monitor, which precisely senses process and temperature variation. The monitor is over 10X faster, 5X more energy-efficient, and 20X smaller compared with conventional thermal monitors of similar accuracy. With adaptive write, the write latency of STT-RAM and MeRAM cache are reduced by up to 17% and 59% respectively, and application run time is improved by up to 41%.
Year
DOI
Venue
2016
10.1145/2897937.2897979
DAC
Keywords
Field
DocType
MeRAM, STT-RAM, adaptive write, thermal monitor, process variation, temperature variation, MTJ
Torque,Latency (engineering),Computer science,Cache,Word error rate,Magnetoresistive random-access memory,Electronic engineering,Process variation,Computer hardware,Temperature measurement,Random access
Conference
Citations 
PageRank 
References 
1
0.36
14
Authors
6
Name
Order
Citations
PageRank
Shaodi Wang1324.54
Hochul Lee2233.85
Cecile Grezes320.73
Pedram Khalili4234.29
Kang L. Wang521.40
Puneet Gupta61158117.59