CDH-FS - CAVU Aerospace UK - SmallSat Catalog - Orbital Transports

CDH-FS

The CAVU CDH-FS is a state-of-the-art, fully redundant FPGA-based satellite onboard computer system. It’s designed with a backup processor board that seamlessly takes over in case of a primary processor failure, ensuring uninterrupted operation. This redundancy significantly enhances the system’s reliability and safety, a critical feature for space missions.

The onboard computer (OBC) is engineered to withstand various space hazards, including radiation, cosmic rays, and solar flares.

It utilizes a Microchip/Microsemi SmartFusion2 and ProASIC3 Flash Based FPGAs, which are not only SEU immune but also more power-efficient than conventional SRAM-based FPGA architectures.

Specifications
Dimensions:
205x203x87 mm
Mass:
4,250 g
Power Supply:
5V +/- 5%
Power Consumption:
3W ~ 5W
Processor:
ARM Cortex-M3 on FPGA
FPGA 1:
Microchip/Microsemi SmartFuion2 Flash Based FPGA
FPGA 2:
Microsemi ProASIC3 Flash Based FPGA for Interaface
Processor Performance:
150 DMIPS @ 128MHz
Programming and Debug:
SoftConsole/Keil via JTAG
RAM:
160Mbits MRAM 40 bits width (128Mbits+32Mbits ECC)
ROM:
96Mbits MRAM (Configurable as Triple 32Mbits)
Nonvolatile Flash Memory:
Total 24Gbit SLC NAND Flash (Triple 8G)
Serial FRAM:
256 Kbit
Serial NOR:
256 Mbit
Radiation Hardness:
Total Ionizing Dose: 30Krad (Si)/yr
Latchup:
SEE @ 60MeV
Operating Temperature Range:
-40C to 85˚C @10^-8 torr
Shock:
2000g, 2000-10000Hz
Random Vibrations:
14g(RMS) 3-Axis , 20~2000Hz
DIGITAL/ANALOG Interface:
Digital Outputs (5V/3.3V) : 100x
DIGITAL/ANALOG Interface:
Digital Inputs (5V/3.3V) : 90x
DIGITAL/ANALOG Interface:
PWM/Pulse Outputs (5V/3.3V) : 10x
DIGITAL/ANALOG Interface:
16bits Analog To Digital Converter (-10V~+10V) : 128x
DIGITAL/ANALOG Interface:
Digital To Analog Converter (0V~5V) : 2x
Serial Interface:
CAN2.0 Up to 1Mbps : 5x
Serial Interface:
Full-Duplex RS422 : 8x
Serial Interface:
Half-Duplex RS485 : 8x
Serial Interface:
RS232 :1x
Serial Interface:
I2C : 1x
Serial Interface:
SPI : 1x
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