Robust On-Board Data Handling Unit (OBC)
S4 - Smart Small Satellite Systems GmbH
Ultra-low-power, dual-redundant 16-bit RISC on-board computer for CubeSats with flight heritage since 2013.
Typed specifications21 values
Discloses 6 of 13 fields engineers filter by in this category (category median 5).
- Processor
- two redundant 16-bit RISC microcontrollers on a single subsystem board datasheet p.1
- Mass
- 38 g product page
- CPU clock
- 1–24 MHz product page
- Envelope (L×W×H)
- 90 x 90 x 6.9 mm product page
- RAM
- 2 MB product page 32 768 MB max | 2 MB
- Mass storage
- 2 GB product page
- Supply voltage
- 3.3–9 V product page
- Power consumption
- 0.015 W nominal · datasheet p.1 0.015 W max · redundant system in nominal operations (less than 15 mW) | 0.015 W nom.
- Flight software support
- advanced fault detection, isolation, and recovery (FDIR) software; operations software completely updates in-orbit datasheet p.1
- Radiation and fault mitigation
- other dual-redundant micro-processors in warm-backup · datasheet p.1 latch-up protection (current limiting) Latchup-Protection with automatic power cycling | other multi-level watchdog architecture | other partial power down support isolates the core from the bus dur…
- Connector
- compatible to UNISEC Europe electrical interface standard datasheet p.1
- Flight heritage
- uninterrupted operations in orbit since 2013 launch datasheet p.1
- Satellite class
- CubeSat Smart Components for Professional CubeSats; enhances the reli… · datasheet p.1
- Redundancy
- other dual-redundant micro-processors in warm-backup (core module r… · datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier11 lines, in the manufacturer's own wording
- Power consumption
- < 15 mW
- Power supply
- 3.3 V
- Backup power supply
- 3.3-9 V
- Mass
- 38 g
- Dimensions
- 90 x 90 x 6.9 mm
- Program memory
- 2 x 256 KB
- S-ram
- 2 x 16 KB
- Mcu clock
- 1-24 MHz
- External data flash
- 2 x 4 MB
- Sd card memory
- < 32 GB
- Flight heritage
- In continuous uninterrupted orbital operation since 2013 launch (UWE-3)
About
The OBC implements two redundant 16-bit RISC microcontrollers on a single board, consuming under 15 mW nominally. Task-optimized processing and clock frequency reduce exposure to radiation-induced single-event effects, and the design avoids bootloading and RAM code execution for enhanced robustness. A warm-backup scheme allows automatic recovery from failures without manual intervention, with data and programming cross-connection between redundant devices enabling mutual aid up to full mutual reconfiguration. The design supports fail-safe in-orbit software updates, successfully demonstrated in flight, provides independent power supply for full satellite power cycling, and includes an independent redundant power-cycling unit that monitors the core and can force a controlled power cycle on lock-up. It is compatible with the UNISEC Europe electrical interface standard, and has been in continuous, uninterrupted orbital operation since a 2013 launch aboard UWE-3.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.