Title
Predicting Shot-Level SRAM Read/Write Margin Based on Measured Transistor Characteristics
Abstract
An SRAM-array test structure provides the capability of directly measuring the characteristics of each transistor and the read/write metrics for each static random access memory (SRAM) cell in the array. However, the total test time of measuring the read/write metrics takes longer than that of measuring each transistor's characteristics. This paper presents a model-fitting framework to predict the average read/write metrics of the SRAM cells in a lithography shot using only the measured transistor characteristics. The proposed framework is validated through the measurement result of 4750 samples of a 128-bit SRAM-array test structure implemented in a United Microelectronics Corporation 28-nm process technology. The experimental results show that the learned models can achieve at least 97.77% R-square on fitting the shot-level read static noise margin, write margin, and read current based on 2375-sample testing data.
Year
DOI
Venue
2016
10.1109/TVLSI.2015.2418998
VLSI) Systems, IEEE Transactions  
Keywords
Field
DocType
array test-structure,sram characterization,model-fitting,process monitor,test-time reduction.,radio frequency,time measurement,transistors
Microelectronics,Computer science,Static random-access memory,Real-time computing,Radio frequency,Electronic engineering,Lithography,Test data,Transistor,Test structure,Electrical engineering,Write margin
Journal
Volume
Issue
ISSN
PP
99
1063-8210
Citations 
PageRank 
References 
0
0.34
9
Authors
6
Name
Order
Citations
PageRank
Shu-Yung Bin100.34
Shih-Feng Lin200.34
Ya Ching Cheng300.34
Wen-Rong Liau400.68
alex hou500.34
Mango Chia-Tso Chao6529.86