Cobham Gaisler AB provides IP cores and supporting development tools for embedded processors based on the SPARC architecture. We specialize in digital hardware design for both commercial and aerospace applications

GR-MCC-C LEON Development Board

Actel ProASIC3E / ProASIC3L / RT ProASIC3 FPGA board, especially developed for LEON3 / LEON3-FT development, with on-board SRAM, Flash PROM, ADC devices, LVDS and CAN transceivers, user I/O expansion connectors etc.

The GR-MCC-C board has been developed in a co-operation between Cobham Gaisler, ÅAC Microtec and Pender Electronic Design, to support early development and fast prototyping of LEON3 / LEON3FT based designs. The board incorporates an Actel ProASIC3E field programmable gate array, and is capable of operating stand-alone or in combination with other boards.

Cobham Gaisler provides standard LEON3-FT based components based on the Actel RT ProASIC3 technology.



  • Double-Euro style PCB (233.5mm x 160mm) form factor
  • FPGA:
    • Actel ProASIC3E (A3PE3000-FGG484)
    • Optional Actel ProASIC3L (A3PE3000L-FGG484)(long lead item)
    • Optional RT ProASIC3 (RT3PE3000L-CG484B)(long lead item)
    • Optional socket (long lead item)
  • On-board memory:
    • 64 Mbit FLASH PROM (8M x 8 bit)(optional 128 Mbit, long lead time item)
    • 64 Mbit SRAM (2M x 32+8 bit)(optional 2nd bank of 64 Mbit, long lead time item)
  • Interfaces:
    • Dual LVDS transceivers with optical isolation (10 MBPS limitation)
    • Dual CAN transceivers
    • Four octal 12-bit ADC devices (AD7891) providing 32 analogue channels (two 2x25 pin 0.1” headers)
    • 60 General purpose I/O (two 2x25 pin 0.1” headers)
    • 16 Parallel IO expansion (2x10 pin 0.1” header)
    • I/O expansion with 60 and 120 pin connectors (AMP 177-984-2/5)
    • JTAG and FPGA programming capability
  • Power, reset and auxiliary circuits
  • On-board oscillators
  • LEON3 and LEON3-FT compatible
  • Supports core frequencies up to 30 MHz
  • Rich software development infra-structure:


  • Additional mezzanine and accessory boards have been developed to provide more I/O expansion possibilities for the GR-MCC-C development board.

The GR-RTAX-MEZZ mezzanine board supports:
- Redundant MIL-STD-1553B interface
- Single CAN transceiver

The GR-RTAX-MEZZ-2 mezzanine board supports:
- Single 10/100 Ethernet PHY (limitation on the GR-MCC-C board)
- First redundant MIL-STD-1553B interface
- Second redundant MIL-STD-1553B interface

The GR-TMTC-MEZZ mezzanine board supports:
- RS422 transmitters for CCSDS Telemetry
- RS422 receivers for CCSDS Telecommand

The GR-CPCI-TEST mezzanine board supports: Test pin
The GR-CPCI-LVDS accessory board supports: Dual LVDS transceivers
The GR-CPCI-RS232 accessory board supports: Dual RS232 transceivers
The GR-CPCI-RS422 accessory board supports: Dual RS422 transceivers
The GR-CPCI-CAN accessory board supports: Redundant CAN transceivers
The GR-TMTC-PW accessory board supports : Dual PacketWire transceivers
The GR-TMTC-ADAPTER accessory board supports : CCSDS TM/TC transceivers

Note that the GR-MCC-C board does not support memory expansion.


Document File
GR-MCC-C Product description GR-MCC-C_product_sheet
GR-MCC-C User's Manual GR-MCC-C_user_manual
GR-MCC-C Assembly Drawing GR-MCC-C_assy_dwg
GR-MCC-C Dimension Drawing GR-MCC-C_dimension_dwg
GR-MCC-C Connector Drawing GR-MCC-C_connector_dwg