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Digital Device Architecture and the Safe Use of Flash Devices in MunitionsFlash technology is being utilized in fuzed munition applications and, based on the development of digital logic devices in the commercial world, usage of flash technology will increase. Digital devices of interest to designers include flash-based microcontrollers and field programmable gate arrays (FPGAs). Almost a decade ago, a study was undertaken to determine if flash-based microcontrollers could be safely used in fuzes and, if so, how should such devices be applied. The results were documented in the Technical Manual for the Use of Logic Devices in Safety Features. This paper will first review the Technical Manual and discuss the rationale behind the suggested architectures for microcontrollers and a brief review of the concern about data retention in flash cells. An architectural feature in the microcontroller under study will be discussed and its use will show how to screen for weak or failed cells during manufacture, storage, or immediately prior to use. As was done for microcontrollers a decade ago, architectures for a flash-based FPGA will be discussed, showing how it can be safely used in fuzes. Additionally, architectures for using non-volatile (including flash-based) storage will be discussed for SRAM-based FPGAs.
Document ID
20170004555
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Katz, Richard B.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Flowers, David
(Department of Defense Washington, DC, United States)
Bergevin, Keith
(Department of Defense Washington, DC, United States)
Date Acquired
May 11, 2017
Publication Date
May 9, 2017
Subject Category
Electronics And Electrical Engineering
Computer Operations And Hardware
Report/Patent Number
GSFC-E-DAA-TN41620
Meeting Information
Meeting: National Defense Industrial Association (NDIA) 60th Annual Fuze Conference
Location: Cincinnati, OH
Country: United States
Start Date: May 9, 2017
End Date: May 11, 2017
Sponsors: National Defense Industrial Association
Distribution Limits
Public
Copyright
Public Use Permitted.
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