BAE Systems RAD750 3U cPCI Single Board Computer

The BAE Systems RAD750 3U cPCI Single Board Computer is a radiation-hardened computing platform engineered for space and hostile environments. Built on the RAD750® processor—a radiation-hardened PowerPC 750 ISA superscalar RISC architecture—this SBC delivers high-performance computing with proven reliability in mission-critical spaceborne applications including satellite operations and spacecraft control systems.

## Technical Specifications

**Processor:** RAD750® radiation-hardened PowerPC 750 ISA, superscalar RISC architecture. Clock speeds range from 110 MHz to 200 MHz depending on technology node. Performance reaches >400 MIPS at 200 MHz, with 435 DMIPS and 6.9 SPECfp95 achievable at 198 MHz. On-die cache includes 32 KB instruction cache, 32 KB data cache, and 1 MB L2 cache interface with extended options available. Approximately 10.4 million transistors implemented in 0.15 µm to 0.25 µm radiation-hardened bulk CMOS.

**Radiation Tolerance:** Total ionizing dose (TID) hardness reaches 1 Mrad (Si) for 0.15 µm technology and 200 Krad (Si) for 0.25 µm variants. Single event upset (SEU) performance is <1.6 E-10 errors/bit-day at 90 percent worst-case GEO. Latchup-immune design eliminates single event latch-up (SEL) failures.

**Memory Architecture:** 1 GB SDRAM with EDAC protection, 36 MB radiation-hardened SRAM, plus 8 MB SRAM dedicated to SpaceWire ASIC. SUROM capacity is 256 KB with selectable 256 KB EEPROM or 64 KB PROM. Additional 4 MB non-volatile memory. Legacy DRAM option: 128 MB with SECDED and Nibble ECC.

**Power:** CPU dissipation approximately 5 W at 133 MHz. Full SBC power consumption ranges from 10 W to 12.2 W at 198 MHz. Supply voltage 3.3 V ±5%, with onboard regulators generating 2.5 V and 1.8 V rails.

**Interfaces:** PCI version 2.2 backplane bus via Enhanced Power PCI Bridge ASIC. Onboard embedded microcontroller handles housekeeping functions and I/O/memory assistance.

## Key Features

• Single-board form factor in 3U cPCI packaging
• Proven flight-heritage radiation-hardened processor core
• Dual-voltage SDRAM and SRAM support with error correction
• SpaceWire ASIC integration for spacecraft interfaces
• Low power envelope suitable for power-constrained missions

## Typical Applications

• LEO, GEO, and deep-space satellite platforms
• Spacecraft attitude determination and control systems
• On-board data processing and payload management
• High-reliability command and telemetry processing

## Compatibility & Integration

PCI version 2.2 compliant backplane integration. Embedded microcontroller coordinates system functions. Compatible with standard 3U cPCI card cages and power distributions.