Space Radiation Tolerant MRAM
3D Plus (HEICO)
Radiation-tolerant MRAM for space based on Everspin technology, offering SRAM-speed performance with inherent SEU immunity, unlimited endurance, and 20-year data retention. Densities from 1 Mb to 64 Mb.
Technical specifications
- Density Range
- 1 Mb to 64 Mb
- Supply Voltage
- 3.3V
- Access Time
- 40 ns
- Data Bus Widths
- x8b, x16b, x32b, x40b
- Read/Write Endurance
- Unlimited
- Data Retention
- 20 years
- Temperature Range
- -55°C to +105°C
- TID Tolerance
- >50 krad(Si)
- SEL LETth
- >85 MeV.cm²/mg
- SEU LETth (Standby)
- >85 MeV.cm²/mg
- SEU LETth (Dynamic)
- 10 MeV.cm²/mg
- SEU σsat
- 2E-5 cm²/bit
- Package Types
- SOP 44, SOP 54, SOP 68, SOP 96
About
3D PLUS Space Radiation Tolerant MRAM leverages Everspin magneto-resistive technology to deliver non-volatile memory with SRAM-equivalent access speed (40 ns) and inherent single event upset immunity. Data is stored using magnetic polarization rather than charge, giving the devices unlimited read/write endurance and 20-year data retention without need for refresh or battery backup.
Available in densities from 1 Mb to 64 Mb with data bus widths of x8b, x16b, x32b, and x40b on a 3.3V supply, these modules are housed in compact SOP packages (SOP 44 through SOP 96) for SMT assembly. Operating temperature spans -55°C to +105°C.
Radiation performance includes TID tolerance greater than 50 krad(Si), SEL LETth greater than 85 MeV.cm²/mg, and SEU LETth in standby greater than 85 MeV.cm²/mg. In dynamic operation SEU LETth is 10 MeV.cm²/mg with σsat = 2E-5 cm²/bit. These properties make MRAM ideal for storing processor boot code, FPGA bitstreams, and program storage requiring in-orbit reprogramming.
Flight heritage includes Glonass, Sentinel 2, and KompSat-6 missions since 2007 with no reported failures, demonstrating long-term reliability across diverse orbital environments.
Documentation
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
- Datasheet (PDF) www.3d-plus.com ↗
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
