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Space FPGA Portfolio Product Table Documentation Kits and Hardware

RTSX-SU Radiation-Tolerant FPGAs

High-Reliability, Radiation-Tolerant, Antifuse-Based FPGAs

The RTSX-SU family is a unique product offering for space applications. RTSX-SU radiation-tolerant FPGAs feature SEU-hardened D-type flip-flops that offer the benefits of Triple Module Redundancy (TMR) without the associated overhead. Manufactured using 0.25 µm technology at the United Microelectronics Corporation (UMC) facility in Taiwan, RTSX-SU FPGAs offer levels of radiation survivability that greatly exceed those of typical CMOS devices.

Features

Highly reliable, nonvolatile antifuse technology
Low power
Up to 360 user-programmable I/Os
Hermetically sealed packages for space applications (CQFP, CCGA/LGA, CCLG)

Radiation Tolerance

SEU-hardened registers that eliminate the need to implement TMR
Immune to Single-Event Upsets (SEUs) to LETTH > 40 MeV-cm2/mg
SEU rate < E10-10 upsets/bit-day in worst-case geosynchronous orbit
Up to 100 krad (Si) Total Ionizing Dose (TID)
Single-Event Latch-Up (SEL) immunity

Qualification

QML class Q qualification
Heritage in many major programs including Pluto New Horizons, Juno, GOES-R and Iridium NEXT

Learn About Our Space FPGA Portfolio

Space

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Radiation and Reliability

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Radiation-Tolerant FPGAs

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Sub-QML FPGAs

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Products

Device	RTSX32SU	RTSX72SU
Typical Gates	32,000	72,000
System Gates	48,000	108,000
Logic Modules	2,880	6,036
Combinatorial Cells	1,800	4,024
SEU-Hardened Register Cells	1,080	2,012
Maximum Flip-Flops	1,980	4,024
Maximum User I/Os	227	360
Clocks	3	3
Quadrant Clocks	0	4
Speed Grades	STD,-1	STD, -1
Qualification	B,E,M	B,E
CCGA/LGA Package	256 CCLG	624 CCGA
CQFP Package	84/208/256	208/256

Documentation

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Document Category	Title	Date
Supporting Collateral	RT54SX-S Tr/Tf Experiment	06 Jul 2004
Supporting Collateral	RT54SX Tr/Tf Experiment	06 Jul 2004
Supporting Collateral	PD3068: Package Mechanical Drawings Datasheet	17 Feb 2023
Packaging Specifications	Package Thermal Characteristics and Weights	05 Jun 2003
Packaging Specifications	Hermetic Package MechanicalConfiguration	15 Jan 2003
User Guide	RadHard/RadTolerant Programming Guide	30 Mar 2003
Supporting Collateral	Achieving High Performance in Military and Aerospace Applications	25 Nov 2003
Supporting Collateral	Power Supply Transients on RTAX-S and RTSX-SU Devices White Paper	13 Feb 2020
Supporting Collateral	Enhanced Qualification and Lot Acceptance Procedures	25 Aug 2005
Application Notes	AC149: Design Migration from the RT54SX32 to the RT54SX32S Device App Note	14 Jan 2003
Application Notes	AC251: Power Cycling of RTSX-S Devices App Note	22 Mar 2004
Application Notes	AC198: Clock Skew and Short Paths Timing App Note	17 Mar 2004
Application Notes	AC172: Post-Programming Burn-In (PPBI) for Actel RT54SX-S and SX-A FPGAs App Note	15 Jan 2003
Application Notes	AC233: Electro-Static Discharge App Note	14 Jul 2005
Application Notes	AC275: Actel CCGA to FBGA Adapter Socket Instructions	07 Oct 2003	Design Files
Application Notes	AC195: Prototyping for the RT54SX-S Enhanced Aerospace FPGA	14 Jan 2003	Design Files
Application Notes	AC158: Microsemi SX-A and RTSX-SU Devices in Hot-Swap and Cold-Sparing Applications App Note	14 Jan 2003
Application Notes	AC200: Actel eX, SX-A and RTSX-S I/Os App Note	14 Jan 2003
Application Notes	AC169: Using A54SX72A and RT54SX72S Quadrant Clocks App Note	05 Feb 2003
Application Notes	AC308: Antifuse MetaReport AN	06 May 2013
Application Notes	AC379: Advanced Static Timing Analysis Using SmartTime App Note	30 Oct 2011
Application Notes	AC263: Simultaneous Switching Noise and Signal Integrity	19 Feb 2003
Application Notes	AC276: Board Level Considerations for Microsemi FPGAs App Note	15 Jan 2003
Application Notes	AC160: IEEE Standard 1149.1 (JTAG) in the SX/RTSX/SX-A/eX/RT54SX-S Families App Note	14 Jan 2003
Application Notes	Source-Synchronous Clock Designs: Timing Constraints and Analysis App Note	02 Aug 2011	Design Files
Board Design Files	RTSX-S/RTSX-SU IBIS Model - All I/O Configurations	06 Mar 2005
Board Design Files	Design-Based (Custom) RTSX-S/RTSX-SU IBIS Model Generation Script	11 Feb 2009
IBIS	RTSX16/RTSX32 IBIS Model Mixed Voltage Operation	08 Apr 2024
Data Sheets	HiRel SX-A Family FPGAs Datasheet	14 Jan 2003
	CQ208-RTSX.zip	12 Aug 2022
Data Sheets	RTSX-SU RadTolerant FPGAs (UMC) Datasheet	20 Jun 2004
	CC256-RTSX32SU.xlsx	12 Aug 2022
	CG624-RTSX72SU.xlsx	12 Aug 2022
	CQ84-RTSX32SU.xlsx	12 Aug 2022
Board Design Files	RT54SX32S-CG256 BSDL	08 Mar 2005
Board Design Files	RT54SX32S-CQ208 BSDL	08 Mar 2005
Board Design Files	RT54SX32S-CQ256 BSDL	08 Mar 2005
Board Design Files	RT54SX72S-CG624 BSDL	08 Mar 2005
Board Design Files	RT54SX72S-CQ208 BSDL	08 Mar 2005
Board Design Files	RT54SX72S-CQ256 BSDL	08 Mar 2005
Board Design Files	RT54SX32S-CQ84 BSDL	12 May 2010
Supporting Collateral	eX, SX-A and RT54SX-S Power Calculator	19 Mar 2003


Document Category Title Date	Supporting Collateral RT54SX-S Tr/Tf Experiment 06 Jul 2004
Document Category Title Date	Supporting Collateral RT54SX Tr/Tf Experiment 06 Jul 2004
Document Category Title Date	Supporting Collateral PD3068: Package Mechanical Drawings Datasheet 17 Feb 2023
Document Category Title Date	Packaging Specifications Package Thermal Characteristics and Weights 05 Jun 2003
Document Category Title Date	Packaging Specifications Hermetic Package MechanicalConfiguration 15 Jan 2003
Document Category Title Date	User Guide RadHard/RadTolerant Programming Guide 30 Mar 2003
Document Category Title Date	Supporting Collateral Achieving High Performance in Military and Aerospace Applications 25 Nov 2003
Document Category Title Date	Supporting Collateral Power Supply Transients on RTAX-S and RTSX-SU Devices White Paper 13 Feb 2020
Document Category Title Date	Supporting Collateral Enhanced Qualification and Lot Acceptance Procedures 25 Aug 2005
Document Category Title Date	Application Notes AC149: Design Migration from the RT54SX32 to the RT54SX32S Device App Note 14 Jan 2003
Document Category Title Date	Application Notes AC251: Power Cycling of RTSX-S Devices App Note 22 Mar 2004
Document Category Title Date	Application Notes AC198: Clock Skew and Short Paths Timing App Note 17 Mar 2004
Document Category Title Date	Application Notes AC172: Post-Programming Burn-In (PPBI) for Actel RT54SX-S and SX-A FPGAs App Note 15 Jan 2003
Document Category Title Date	Application Notes AC233: Electro-Static Discharge App Note 14 Jul 2005
Document Category Title Date	Application Notes AC275: Actel CCGA to FBGA Adapter Socket Instructions 07 Oct 2003 Design Files
Document Category Title Date	Application Notes AC195: Prototyping for the RT54SX-S Enhanced Aerospace FPGA 14 Jan 2003 Design Files
Document Category Title Date	Application Notes AC158: Microsemi SX-A and RTSX-SU Devices in Hot-Swap and Cold-Sparing Applications App Note 14 Jan 2003
Document Category Title Date	Application Notes AC200: Actel eX, SX-A and RTSX-S I/Os App Note 14 Jan 2003
Document Category Title Date	Application Notes AC169: Using A54SX72A and RT54SX72S Quadrant Clocks App Note 05 Feb 2003
Document Category Title Date	Application Notes AC308: Antifuse MetaReport AN 06 May 2013
Document Category Title Date	Application Notes AC379: Advanced Static Timing Analysis Using SmartTime App Note 30 Oct 2011
Document Category Title Date	Application Notes AC263: Simultaneous Switching Noise and Signal Integrity 19 Feb 2003
Document Category Title Date	Application Notes AC276: Board Level Considerations for Microsemi FPGAs App Note 15 Jan 2003
Document Category Title Date	Application Notes AC160: IEEE Standard 1149.1 (JTAG) in the SX/RTSX/SX-A/eX/RT54SX-S Families App Note 14 Jan 2003
Document Category Title Date	Application Notes Source-Synchronous Clock Designs: Timing Constraints and Analysis App Note 02 Aug 2011 Design Files
Document Category Title Date	Board Design Files RTSX-S/RTSX-SU IBIS Model - All I/O Configurations 06 Mar 2005
Document Category Title Date	Board Design Files Design-Based (Custom) RTSX-S/RTSX-SU IBIS Model Generation Script 11 Feb 2009
Document Category Title Date	IBIS RTSX16/RTSX32 IBIS Model Mixed Voltage Operation 08 Apr 2024
Document Category Title Date	Data Sheets HiRel SX-A Family FPGAs Datasheet 14 Jan 2003
Document Category Title Date	CQ208-RTSX.zip 12 Aug 2022
Document Category Title Date	Data Sheets RTSX-SU RadTolerant FPGAs (UMC) Datasheet 20 Jun 2004
Document Category Title Date	CC256-RTSX32SU.xlsx 12 Aug 2022
Document Category Title Date	CG624-RTSX72SU.xlsx 12 Aug 2022
Document Category Title Date	CQ84-RTSX32SU.xlsx 12 Aug 2022
Document Category Title Date	Board Design Files RT54SX32S-CG256 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX32S-CQ208 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX32S-CQ256 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX72S-CG624 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX72S-CQ208 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX72S-CQ256 BSDL 08 Mar 2005
Document Category Title Date	Board Design Files RT54SX32S-CQ84 BSDL 12 May 2010
Document Category Title Date	Supporting Collateral eX, SX-A and RT54SX-S Power Calculator 19 Mar 2003

Application Notes

Title	Date
AC149: Design Migration from the RT54SX32 to the RT54SX32S Device App Note	14 Jan 2003
AC251: Power Cycling of RTSX-S Devices App Note	22 Mar 2004
AC198: Clock Skew and Short Paths Timing App Note	17 Mar 2004
AC172: Post-Programming Burn-In (PPBI) for Actel RT54SX-S and SX-A FPGAs App Note	15 Jan 2003
AC233: Electro-Static Discharge App Note	14 Jul 2005
PD3068: Package Mechanical Drawings Datasheet	17 Feb 2023
AC275: Actel CCGA to FBGA Adapter Socket Instructions	07 Oct 2003	Link
AC195: Prototyping for the RT54SX-S Enhanced Aerospace FPGA	14 Jan 2003	Link
AC158: Microsemi SX-A and RTSX-SU Devices in Hot-Swap and Cold-Sparing Applications App Note	14 Jan 2003
AC200: Actel eX, SX-A and RTSX-S I/Os App Note	14 Jan 2003
AC169: Using A54SX72A and RT54SX72S Quadrant Clocks App Note	05 Feb 2003
AC308: Antifuse MetaReport AN	06 May 2013
AC379: Advanced Static Timing Analysis Using SmartTime App Note	30 Oct 2011
AC263: Simultaneous Switching Noise and Signal Integrity	19 Feb 2003
AC276: Board Level Considerations for Microsemi FPGAs App Note	15 Jan 2003
AC160: IEEE Standard 1149.1 (JTAG) in the SX/RTSX/SX-A/eX/RT54SX-S Families App Note	14 Jan 2003
Source-Synchronous Clock Designs: Timing Constraints and Analysis App Note	02 Aug 2011	Link

Data Sheets

IBIS Models

BSDL Models

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Data Sheets

Title	Date
RTSX-SU RadTolerant FPGAs (UMC) Datasheet	20 Jun 2004
HiRel SX-A Family FPGAs Datasheet	14 Jan 2003
PD3068: Package Mechanical Drawings Datasheet	17 Feb 2023
CQ84-RTSX32SU.xlsx	12 Aug 2022
CQ208-RTSX.zip	12 Aug 2022
CC256-RTSX32SU.xlsx	12 Aug 2022
CG624-RTSX72SU.xlsx	12 Aug 2022

IBIS Models

Title	Date
RTSX-S/RTSX-SU IBIS Model - All I/O Configurations	06 Mar 2005
Design-Based (Custom) RTSX-S/RTSX-SU IBIS Model Generation Script	11 Feb 2009
RTSX16/RTSX32 IBIS Model Mixed Voltage Operation	08 Apr 2024

BSDL Models

Title	Date
RT54SX32S-CG256 BSDL	08 Mar 2005
RT54SX32S-CQ208 BSDL	08 Mar 2005
RT54SX32S-CQ256 BSDL	08 Mar 2005
RT54SX72S-CG624 BSDL	08 Mar 2005
RT54SX72S-CQ208 BSDL	08 Mar 2005
RT54SX72S-CQ256 BSDL	08 Mar 2005
RT54SX32S-CQ84 BSDL	12 May 2010

User Guides

Title	Date
RadHard/RadTolerant Programming Guide	30 Mar 2003

Title	Date
eX, SX-A and RT54SX-S Power Calculator	19 Mar 2003

White Papers

Title	Date
Achieving High Performance in Military and Aerospace Applications	25 Nov 2003
Power Supply Transients on RTAX-S and RTSX-SU Devices White Paper	13 Feb 2020
Enhanced Qualification and Lot Acceptance Procedures	25 Aug 2005

Radiation Reports

Technical Papers

Title	Date
RT54SX-S Tr/Tf Experiment	06 Jul 2004
RT54SX Tr/Tf Experiment	06 Jul 2004
PD3068: Package Mechanical Drawings Datasheet	17 Feb 2023
Package Thermal Characteristics and Weights	05 Jun 2003
Hermetic Package MechanicalConfiguration	15 Jan 2003

RTSX-SU radiation-tolerant FPGAs are enhanced versions of our commercial SX-A family of devices specifically designed for enhanced radiation performance. Featuring SEU-hardened D-type flip-flops that offer the benefits of triple module redundancy (TMR) without requiring cumbersome user intervention, the RTSX-SU family is a unique product for space applications.

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