The GR740-MINI evaluation board is a compact evaluation platform designed to showcase the capabilities of the GR740 quad-core LEON4FT SoC and the CertusPro-NX FPGA.


  • Small form factor (7x9.5 cm)
  • GR740 quad-core LEON4FT SPARC V8 Processor
  • CertusPro-NX FPGA
  • USB-C connector for debug and power
  • FMC+ connector
  • 2x Ethernet RJ45 connectors

Memory and I/O

  • GR740 quad-core processor
    • USB-C: JTAG and UART
    • 1 x Ethernet to RJ45
    • FMC+: 4 x SpaceWire
    • 256MB SDRAM
    • 128MB FLASH
  • CertusPro-NX FPGA
    • USB-C: UART and JTAG
    • 1 x Ethernet to RJ45
    • FMC+: 4 x SerDes, 23x LVDS pairs, 30 3V I/Os
    • 1GB DDR3
    • 512Mb SPI FLASH




The GR740 is a rad-hard system-on-chip featuring a quad-core fault-tolerant LEON4 SPARC V8 processor, eight port SpaceWire router, PCI initiator/target interface, and 10/100/1000 Mbit Ethernet interfaces. The GR740 device is targeted at high-performance general-purpose processing. The architecture is suitable for both symmetric and asymmetric multiprocessing.

CertusPro-NX FPGA

The GR740-MINI board is equipped with the CertusPro-NX FPGA, which is the commercial-off-the-shelf (COTS) variant of the radiation-tolerant CertusPro-NX-RT FPGA.

Frontgrade provides the Certus/Pro™-NX-RT FPGAs, engineered for space missions, featuring SnPb solder ball leads, and produced from single, traceable wafer lots that have successfully passed radiation acceptance testing. These compact and energy-efficient FPGAs offer 96K logical cells, 7.3Mb of on-die memory, and wideband interfaces.

FPGA development

A template design for the CertusPro FPGA is available. It provides a reliable starting point for customization and optimization, enabling designers to concentrate on the unique aspects of their SoC design. The template design is based on the GRLIB IP library. See for further information.