CAVU Aerospace UK Ltd

PIONEERING SPACECRAFT COMPUTING

The CAVU OBC-PRO-2 is a low-profile onboard computer designed for various missions, where intensive processing is not a primary requirement. However, it offers the capability to deliver up to 200 DMIPS on its ARM Cortex-M3 core if processing demands arise. Equipped with a versatile range of interfaces—including GPIO, ADC, CAN, RS232, RS422, and optional Ethernet—the OBC-PRO-2 provides robust support for various mission-critical functions while maintaining a compact, lightweight, and energy-efficient design.

KEY FEATURES

  • Processor: ARM Cortex-M3 on SmartFusion2 FPGA SoC.
  • Analog Inputs: 16 Channels, 16-bit (±5V, ±10V, ±20V)
  • Digital I/O: 20 GPIOs (3.3V, 5V)
  • Interfaces:
    • 2 CAN
    • 4 RS422
    • 4 RS232
    • TTL UART
    • I2C
    • Ethernet (non-standard)
  • Memory:
    • 128KB eNVM Flash (ROM)
    • 144KB + 191Kb RAM
    • 4Mbit Serial FRAM EEPROM
    • 128Mbit Flash
  • RTC: 1 real-time clock
  • Power Converters: Double Redundant for Main Power Converters
  • Power Supply: 28V ±4V, with power consumption under 1.5W.
  • Radiation Hardness:
    • TID: 30Krad (Si)
    • Latch-up immune
    • Single Event Effects (SEE) tolerance at 60 MeV.
  • Customizable Options: Fully customizable without additional NRE costs.

FORM FACTOR

FORM FACTOR

    • Dimensions: 125x110x20 mm
    • Connectors: Micro-D

MECHANICAL & ENVIRONMENTAL RESILIENCE

  • Weight: Less than 500g.
  • Operating Conditions: Suitable for spaceflight, capable of withstanding extreme temperature and pressure variations.

Software Support

  • FreeRTOS or uC-OS-3  with bare-metal programming for full hardware control.
  • Development and debugging via SoftConsole, Keil, or IAR IDEs, with JTAG support for diagnostics.
  • Ongoing integration of MS Coder with the SmartFusion2 platform for enhanced mission control compatibility.