CAVU CDH-FS
CAVU Aerospace
The CAVU CDH-FS is an advanced, fully redundant FPGA-based on-board computer system designed for critical space missions, offering continuous operation and resilience against severe space conditions.
Key figurescomparable across the catalogue
- Mass
- 4,250 kg
- Power
- 3 W
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Key system features
- Dual Cold/Hot Redundant OBC Modules
- Key system features (2)
- Dual Cold/Hot Redundant ADC/DAC Modules
- Key system features (3)
- Double Hot Redundant ADC Converters
- Key system features (4)
- Advanced Supervisor & Health Monitoring Module
- Key system features (5)
- Efficient Data Synchronization Between OBC Modules
- Key system features (6)
- Three Selectable Boot Regions from Bootloader
- Key system features (7)
- Fully Customizable Configuration
- Special features
- Expected Life-time: 3-5 years in LEO
- Special features (2)
- On-Board Current & Temperature Monitoring
- Special features (3)
- External On-Board Watchdog Monitor via Supervisor
- Special features (4)
- Power Consumption Monitoring via Supervisor
- Special features (5)
- Triple Real Time Clock
- Special features (6)
- Hot Redundant On-Board Voltage Converters
- Special features (7)
- Intelligent Fail-Safe Switch-Over Algorithm
- Processor
- ARM Cortex-M3 on FPGA
- Processor (2)
- Microchip/Microsemi SmartFuion2 Flash Based FPGA
- Processor (3)
- Microsemi ProASIC3 Flash Based FPGA for Interaface
- Processor (4)
- FPU on FPGA Upon Request
- Processor (5)
- 150 DMIPS @ 128 MHz
- Processor (min)
- SoftConsole/Keil Programming and Debug via JTAG
- Memory ram
- 160Mbits MRAM 40 bits width (128Mbits+32Mbits ECC)
- Memory rom
- 96Mbits MRAM (Configurable as Triple 32Mbits)
- Memory nonvolatile flash memory
- Total 24Gbit SLC NAND Flash (Triple 8G)
- Memory
- 256K Serial FRAM
- Memory (2)
- 256M Serial NOR
- Environment radiation hardness total ionizing dose
- 30Krad (Si)/yr
- Environment
- Latch-up Immune
- Environment (2)
- SEE @ 60MeV
- Environment temperature & pressure
- -40 C to +85 C @ 10-8 bar
- Environment shocks
- 2000 g, 2000-10000 Hz
- Environment random vibrations
- 14 g(RMS) 3-Axis , 20~2000 Hz
- Interfaces digital outputs
- 100 (5 V/3.3 V)
- Interfaces digital inputs
- 90 (5 V/3.3 V)
- Interfaces pwm/pulse outputs
- 10 (5 V/3.3 V)
- Interfaces ADC
- 128CH 16-bit (-10V~+10 V, +20 V Range Available)
- Interfaces DAC
- 2CH 8-bit (0 V~5 V)
- Interfaces serial can2.0
- 5 (Up to 1 Mbps)
- Interfaces serial full-duplex RS422
- 8
- Interfaces serial half-duplex RS485
- 8
- Interfaces serial RS232
- 1
- Interfaces serial I2C
- 1
- Interfaces serial SPI
- 1
- Budget dimensions
- 205x203x87 mm
- Budget mass
- 4250gr
- Budget power supply
- 5 V ±5%, Custom Range Available
- Budget power consumption
- 3 W ~ 5 W
- Flight heritage
- Flight proven onboard computer for number of satellite projects
About
The CAVU CDH-FS represents a high-performance on-board computer system, featuring a fully redundant FPGA-based architecture to ensure continuous operation. It incorporates a backup processor that seamlessly activates upon primary processor failure, making it essential for critical missions. Engineered to withstand severe space environments, including radiation and cosmic rays, it utilizes the efficiency and SEU immunity of Microchip/Microsemi SmartFusion2 and ProASIC3 Flash-based FPGAs. The system includes two CAVU CDH-1 modules paired with an intelligent supervisor board for enhanced operational security. An interface board duplicates all signals to both main and backup boards, eliminating single points of failure. Continuous monitoring of system health and performance, coupled with automatic failover to a redundant board, ensures mission-critical reliability. Designed for the complex demands of the satellite industry, the CDH-FS supports over 15 serial interfaces and boasts extensive I/O capabilities with 200 GPIOs and 128 channels of ADC. This versatility allows for precise control over a wide range of sensors and actuators, making it a formidable tool in satellite computing. Its superior reliability, redundancy, and flexibility make it suitable for diverse satellite missions. Special features include on-board current and temperature monitoring, an external on-board watchdog monitor via supervisor, power consumption monitoring via supervisor, triple real-time clock, hot redundant on-board voltage converters, and an intelligent fail-safe switch-over algorithm. The processor is an ARM Cortex-M3 on FPGA, utilizing Microchip/Microsemi SmartFusion2 Flash Based FPGA and Microsemi ProASIC3 Flash Based FPGA for interface, with an optional FPU on FPGA. It delivers 150 DMIPS @ 128MHz and supports SoftConsole/Keil Programming and Debug via JTAG. Memory includes 160Mbits MRAM (40 bits width, 128Mbits+32Mbits ECC) for RAM, 96Mbits MRAM (configurable as Triple 32Mbits) for ROM, 24Gbit SLC NAND Flash (Triple 8G) for nonvolatile flash memory, 256K Serial FRAM, and 256M Serial NOR. The CDH-FS is flight-proven on a number of satellite projects and comes with comprehensive ECSS/NASA documentation and test reports.
Documentation
- CAVU CDH-FS ICDv2024.3.pdf PDF source: cavuaerospace.uk ↗
- CAVU-CDH-FS-OS-v2024.2.pdf PDF source: cavuaerospace.uk ↗
- CAVU-CDH-FS-Br-v2024.2.pdf PDF source: cavuaerospace.uk ↗
Need the full ICD, test reports or a specific revision? Ask the supplier directly.