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Evaluation of Spin-transfer Torque DDR MRAM in Space Environment

Closed

Closed

Organisational Unit
Implementation progress
23%
21 July 2021

Duration: 18 months

Objective

The aim is to evaluate the Spin-transfer Torque DDR Magnetic Random Access Memory (MRAM) from EVERSPIN in radiation environment (SEE in priority). The two EVERSPIN STT-DDR MRAM proposed for evaluation are : ·         STT-DDR3 MRAM (see datasheet on https://www.everspin.com/getdatasheet/EMD3D256M ) ·         STT-DDR4 MRAM (see datasheet on https://www.everspin.com/getdatasheet/EMD4E001G ) MRAM technology is very interesting for space use since: ·         MRAM could replace both non-volatile memories (EEPROM, NOR & NAND Flash,  …) and volatile memories due to its fast writes (SRAM or even DRAM…) ·         MRAM technology has a very high endurance (>1e10 cycles when Flash and EEPROM technologies are limited to about 10 000 or 100 000 cycles) ·         MRAM technology is known to have a good withstanding in TID, to have a memory cell SEU immune and some MRAM from EVERSPIN are already SEL immune. Both MRAM selected here are in Spin-Transfer Torque technology (STT-MRAM) using deep-submicron nodes. This Everspin’s newest MRAM technology use the spin torque transfer property, which is the manipulation of the spin of electrons with a polarizing current, to establish the desired magnetic state of the free layer to program, or write, the bits in the memory array. STT-MRAM provides a significant reduction in switching energy compared to Toggle MRAM, and is highly scalable, enabling higher density memory products. This third generation of MRAM technology uses a Perpendicular MTJ. These products perform like a persistent DRAM but with no refresh required. Having these MRAM available for Space Application could be a real benefit for improving the performances of future designs since these memories are 256Mb and 1Gb MRAM whereas available HiRel MRAM reach only 64Mb.

Contract number
4000135378
Programme
OSIP Idea Id
I-2020-03818
Related OSIP Campaign
COTS Campaign
Subcontractors
TRAD - TESTS & RADIATIONS SAS ALTER TECHNOLOGY TUV NORD FRANCE SAS
Main application area
Generic for multiple space applications
Budget
150000€
Evaluation of Spin-transfer Torque DDR MRAM in Space Environment. - New ideas for the use of Commercial Off The Shelf (COTS) components - ETD