A high performance microcomputer for space applicationsThis paper presents a description of a high-performance single board LSI microprocessor (the ATAC-16MS), which forms the core of the attitude and articulation control system of the Galileo spacecraft. The requirements of high speed, low power (20 watts), high reliability and radiation immunity are discussed in terms of the resulting implementation and trade-offs. The problems involved in the transition of a currently operational, fully-militarized processor into a space-qualified processor are summarized. System considerations for the effective use of the ATAC-16MS are also discussed, including the dual block-redundant architecture, the selective application of power for fault isolation and the trade-offs between low power dissipation and high performance of the peripheral circuitry for space applications.
Document ID
19790070378
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Jack, L. (Itek Corp. Sunnyvale, CA, United States)
Mitchell, P. (Itek Corp. Applied Technology Div., Sunnyvale, Calif., United States)