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

LEON3FT-RT3PE Fault-tolerant Processor


The LEON3FT-RT3PE processor is a SOC design based on LEON3FT core, implemented in the RT ProASIC3 radiation-tolerant FPGA. The processor is delivered as a RT ProASIC3 device, with several package and quality options. The combination of the RT ProASIC3 radiation-tolerance and the fault-tolerant capabilities of LEON3FT makes LEON3FT-RT3PE suitable for space application.


LEON3FT-RT3PE RT ProASIC3 functionality

In addition to the LEON3FT core, the LEON3FT-RT3PE includes a number of application-specific IP cores. Several pre-define configurations are available to address different application requirements. All configurations have the same basic architecture, which includes the following functions:

  • LEON3FT processor with 8+4 kbyte cache
  • LEON3 Debug Support Unit
  • PROM/SRAM controller with EDAC
  • Interrupt controller for 15 interrupts
  • Timer module with two 32-bit timers and watchdog
  • Two UARTs with FIFO
  • 16-bit I/O port

The configurations are differentiated according to same the table as LEON3FT-RTAX.

Performance and power

The configurations can be clocked up to 25 MHz over the full military temperature range (except LEON3FT-RT3PE-IC1 and LEON3FT-RT3PE-SC1 that are fixed to 24 MHz). This provides upto 20 DMIPS and 4 MFLOPS in configurations with an FPU. The power consumption depends on the application, and is typically 0.2 W at full processor load. In power-down mode, the processor power consumption is ~ 0.1 W.

Custom configurations

In addition to the pre-defined configurations, it is possible to order LEON3FT-RT3PE devices with custom configurations. Such configuration can also include IP core from the GRLIB IP library which are not listed above. An NRE cost will be charged for the development of each custom configuration.

Packaging, quality and lead time

The LEON3FT-RT3PE RT ProASIC3 devices are shipped in all quality levels supported by Actel. Supported packages are CG484, LG484, CG896, lG896. For prices and lead times, contact This email address is being protected from spambots. You need JavaScript enabled to view it..