San Diego - The commercially based MASS486, Space Electronics' 32-bit Intel 486 single-board computer designed to operate in the harsh-radiation environment of space, sustains a total radiation dose up to 100 krad (Si), depending on orbit. The board has single-event latchup immunity to greater than 40 Mev/mg/cm5 and single-event upset immunity up to 5 Mev/mg/cm5. It operates in temperature ranges from -45 degrees C to 70 degrees C.
To meet these radiation-tolerance requirements, the SBC uses a standard 66-MHz Intel 486 DX2 microprocessor die packaged in the company's patented RAD-PAK technology. Companion chips include inherently radiation-hardened components and other commercial components that are also radiation hardened with RAD-PAK.
The SBC utilizes Space Electronics' Modular Architectured SBCs for Space (Mass) architecture design, which links the microprocessor to an on-board PCI local bus via the PCI bridge. From its library of mainboards and industry-standard PCI Mezzanine Cards for I/O, the company builds SBCs used in the laboratory for application development. Logic from the PMC is transferred to the final, space-flight board to ensure environmental specifications are met. Space Electronics refers to this logic as Virtual PMC (VPMC), because it mimics the original PMC.
VPMC options include massstorage memory and traditional off-board I/O, such as dual redundant MIL-STD-1553 buses; an RS-232 or RS-422 serial bus; a parallel, analog and 10/100 Base Ethernet bus; and 16- to 128-channel analog multiplexers.
The unit is available in a 6U VMEbus or CompactPCI format. The operating system is VXWorks.
The price is $130,000 for the standard basic flight module (FM), which is delivered six months ARO, and $46,500 for the engineering module (EM), with delivery in three months.
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EETInfo No. 603