EverSpin said that it had begun 40 nm perpendicular Magnetic Tunnel Junction (MTJ) STT-MRAM 256Mb chip production in Q4 2017 and will be scaling into volume production in 2018. The company says that this advance is an enabling step to bring MRAM to more markets since this is the first MTJ STT-MRAM entering mass production. EverSpin provides single chip MRAM solutions, while its production partner, Global Foundries, is putting this technology into embedded applications. The 256MB STT-MRAM solutions employs an ST-DDR3 interface. EverSpin says that it has shipped over 70 million MRAM chips so far for data centers, cloud storage, energy, industrial, automotive and transportation markets.