Title :
Ferroelectric memory technology for aerospace applications
Author :
Philpy, Stephen C. ; Kamp, David A. ; DeVilbiss, Alan D. ; Isacson, A.F. ; Derbenwick, Gary F.
Author_Institution :
Celis Semicond. Corp., Colorado Springs, CO, USA
Abstract :
Celis Semiconductor has designed a radiation-hardened 1.5 megabit nonvolatile ferroelectric memory that operates at 3 volts. This memory provides for good retention, virtually unlimited endurance, fast write times, and can operate over a -55°C to 125°C temperature range. This 1.5 megabit memory incorporates twelve 128-kilobit (16K X 8) Strontium Bismuth Tantalate (SBT) ferroelectric memory chips in a one-inch square by approximately .25-inch high multi-chip module. The 128-kilobit ferroelectric chips use a robust two-transistor, two-capacitor memory cell architecture and have a unique addressing scheme to reduce active power requirements and enhance radiation tolerance. The chips are fabricated using radiation-hardened 0.5 micron CMOS underlying circuitry with SBT ferroelectric upper layer processing. This ferroelectric memory provides ideal characteristics necessary for long range deep space missions
Keywords :
CMOS memory circuits; bismuth alloys; ferroelectric storage; integrated memory circuits; multichip modules; space vehicle electronics; strontium alloys; -55 to 125 C; -55°C to 125°C; 0.25-inch multi-chip module; 0.5 micron CMOS circuitry; 0.5 mum; 1.5 Mbit; 128 kbit; 128-kilobit; 3 V; Celis Semiconductor; SBT ferroelectric upper layer; SrBiTa; Strontium Bismuth Tantalate ferroelectric memory chips; addressing; aerospace applications; deep space missions; ferroelectric chips; memory cell architecture; nonvolatile ferroelectric memory; radiation tolerance; Bismuth; CMOS memory circuits; CMOS process; Ferroelectric materials; Memory architecture; Nonvolatile memory; Robustness; Space missions; Strontium; Temperature distribution;
Conference_Titel :
Aerospace Conference Proceedings, 2000 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
0-7803-5846-5
DOI :
10.1109/AERO.2000.878511
