RAD750

The RAD750 is a radiation-hardened single-board computer manufactured by BAE Systems Electronics, Intelligence & Support.[1] The successor of the RAD6000, the RAD750 is for use in high-radiation environments experienced on board satellites and spacecraft.[2] The RAD750 was released in 2001, with the first units launched into space in 2005.[1][3]

RAD750
The RAD750
General information
Launched2001
Designed byIBM
Common manufacturer(s)
Performance
Max. CPU clock rate110 MHz  to 200 MHz 
Cache
L1 cache32 KB instruction + 32 KB data
Architecture and classification
ApplicationRadiation-hardened
Technology node250 nm to 150 nm
MicroarchitecturePowerPC 750
Instruction setPowerPC v.1.1
Physical specifications
Cores
  • 1
History
Predecessor(s)RAD6000
Successor(s)RAD5500
POWER, PowerPC, and Power ISA architectures
NXP (formerly Freescale and Motorola)
IBM
IBM/Nintendo
Other
Related links
Cancelled in gray, historic in italic

Technology

The CPU has 10.4 million transistors, an order of magnitude more than the RAD6000 (which had 1.1 million).[3] It is manufactured using either 250 or 150 nm photolithography and has a die area of 130 mm2.[1] It has a core clock of 110 to 200 MHz and can process at 266 MIPS or more.[1] The CPU can include an extended L2 cache to improve performance.[3] The CPU can withstand an absorbed radiation dose of 2,000 to 10,000 grays (200,000 to 1,000,000 rads), temperatures between −55 °C and 125 °C, and requires 5 watts of power.[1][3] The standard RAD750 single-board system (CPU and motherboard) can withstand 1,000 grays (100,000 rads), temperatures between −55 °C and 70 °C, and requires 10 watts of power.[3]

The RAD750 system has a price that is comparable to the RAD6000, the latter of which as of 2002 was listed at US$200,000 (equivalent to $325,402 in 2022).[4] Customer program requirements and quantities, however, greatly affect the final unit costs.

The RAD750 is based on the PowerPC 750.[1] Its packaging and logic functions are completely compatible with the PowerPC 7xx family.[3]

The term RAD750 is a registered trademark of BAE Systems Information and Electronic Systems Integration Inc.[5]

Deployment

In 2010, it was reported that there were over 150 RAD750s used in a variety of spacecraft.[6] Notable examples,[2] in order of launch date, include:

References
  1. "RAD750 radiation-hardened PowerPC microprocessor" (PDF). BAE Systems. 2008-07-01. Retrieved 2009-04-27.
  2. "RAD750". Ball Aerospace & Technologies. Archived from the original on 2007-07-11. Retrieved 2009-03-08.
  3. L. Burchin (2002-12-04), "Rad750 experience: The challenge of SEE hardening a high performance commercial processor MRQW 2002" (PDF), Microelectronics Reliability and Qualification Workshop, Manhattan Beach, CA: BAE Systems, archived from the original (PDF) on 2009-03-26, retrieved 2009-04-30.
  4. "BAE Systems moves into third generation rad-hard processors". Military & Aerospace Electronics. 2002-05-01. Retrieved 2009-04-30.
  5. "RAD750". Logos Database. Retrieved 2013-02-18. USPTO serial number 75894617
  6. "BAE RAD750 Radiation-Hardened SBCs Control WorldView-1 Satellite". EDA Geek. 2007-10-17. Archived from the original on 2008-12-04. Retrieved 2009-04-28.
  7. The STEREO Mission. Springer. 2008-07-18. ISBN 9780387096483. Retrieved 20 January 2014.
  8. BAE Systems Space Computer Gives Wisdom To The WISE, spacedaily.com, 2009-12-22.
  9. "Juno Launch Press Kit" (PDF). NASA. August 2011. Retrieved 18 February 2013.
  10. NASA Launches Most Capable and Robust Rover to Mars Archived 2021-03-03 at the Wayback Machine.
  11. Van Allen Probes Launch.
  12. Preview of the InSight Mars launch.
  13. "The Mars 2020 Rover's Brains". NASA. Retrieved August 29, 2019.
  14. McComas, David. "Lessons from 30 Years of Flight Software" (PDF). NTRS - NASA Technical Reports Server.
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