NASA GSFC Flight Electronics Branch, Code 561 - Essential Services Node (ESN) Home Page

Flight Electronics Branch Code 561	Electrical Engineering Division Code 560, NASA GSFC Greenbelt, Maryland

Essential Services Node (ESN) The ESN is a multi-chip module developed by the Flight Electronics Branch to solve many on-board housekeeping and commanding problems facing spacecraft subsystem designers today.A single 2.5" x 2.5" x 0.2" package contains: The ESN Custom ASIC designed by FirstPass Inc. (tm) includes: UTMC UT69R000 16-bit processor UTMC BCRTM Two 8254 Counter/Timers 8255 Programmable Peripheral Interface Serial Telemetry and Command Interface 96 Kword RAM 12-bit A/D Converter Up to 23 Analog Channels Documents Available for Download ASIC Interface Control Device Address Mapping ESN Anomaly Reports version 3.0 ESN Anomaly Reports version 4.0 ESN Block Diagram Frequently Asked Questions Hardware Specification version 3.0 Pin Description Source Control Drawing Links to Related Sites Analog Devices FirstPass GSFC Software Site Intel UTMC An E-Mail mailing list is maintained for ESN Users. For information contact Philip Luers, Philip.Luers@gsfc.nasa.gov.
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Essential Services Node (ESN)