Design considerations for a radiation hardened nonvolatile memory
The SA3823 64K EEPROM was developed for both weapon and space applications. The circuit was designed for fabrication in a CMOS/SNOS (Complementary Metal Oxide Semiconductor/Silicon Nitride Oxide Semiconductor) process since this process offers maximum radiation hardness for nonvolatile circuits. [1--6] Specific aspects of the circuit design were influenced by each of the radiation environments of concern. Total dose radiation effects were a factor in the memory cell and sense amplifier designs. Power distribution to the various latches was designed to tolerate the photocurrents generated during a transient radiation pulse. Single event upset (SEU) concerns were accounted for in the design of the latches and the control logic. The SA3823 is a 8K x 8 bit EEPROM which is partitioned into 128 pages with 64 bytes in each page. Data is programmed into the memory one page at a time. Writing data into the memory is a two step process: loading 64 bytes into the data-in latches and then programming the latched data into a page of the memory.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6618049
- Report Number(s):
- SAND-93-0144C; CONF-930704--2; ON: DE93007592
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360605 -- Materials-- Radiation Effects
42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450200* -- Military Technology
Weaponry
& National Defense-- Nuclear Explosions & Explosives
CHALCOGENIDES
DESIGN
DOSE RATES
ELECTRONIC CIRCUITS
HARDENING
MEMORY DEVICES
MICROELECTRONIC CIRCUITS
MICROELECTRONICS
NITRIDES
NITROGEN COMPOUNDS
NUCLEAR WEAPONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
PNICTIDES
RADIATION EFFECTS
RADIATION HARDENING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR STORAGE DEVICES
SILICON COMPOUNDS
SILICON NITRIDES
SILICON OXIDES
SPACE
TRANSISTORS
WEAPONS