In the frame of the ESA/ESTEC Safeguard Data Recorder study a highly reliable NAND-Flash based memory system for use in space was developed. As for all space borne semiconductor memories specific measures against radiation induced data errors and malfunctions are mandatory in order to maintain the required high data integrity. For this purpose an Orthogonal Reed-Solomon Error Correction in combination with an Orthogonal Data Commutation is applied. Additionally algorithms to detect and to cope with radiation induced Single Event Functional Interrupts are implemented. In a demonstration model these functions were realized in a Field Programmable Gate Array. An associated file system enables an easy access to data structures of variable size. The demonstration model is ready for integration into the ESA/ESTEC 'Aviation Lab'. A representative version of the memory core is going to be flown on PROBA-2. Finally NAND-Flash usage for telemetry buffer memories is discussed.
NAND-flash memory technology in mass memory systems for space applications
NAND-Flash-Speichertechnologien in Massenspeichersystemen für Raumfahrtanwendungen
2008
6 Seiten, 4 Bilder, 1 Tabelle, 10 Quellen
Conference paper
Storage medium
English
NAND-Flash Memory Technology in Mass Memory Systems for Space Applications
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