MRAM startup makes progress as rival closes

MRAM startup makes progress as rival closes

Technology News |
By Peter Clarke

SOT-MRAM is an advanced and potentially disruptive form of MRAM that could displace the previous generation of spin-torque transfer (STT) MRAM in embedded applications where MRAM offer scalability advantages over flash memory and potential power-saving and low-voltage operation benefits over SRAM.

Antaios and Spin Memory have both been backed by Applied Materials (see MRAM startup Antaois raises $11 million and ARM, Applied send more money to Spin Memory).

Antaios has told eeNews Europe that it is working with Applied Materials and a tier-one foundry and is producing its test chip on a 28nm/22nm manufacturing process. The test chip is currently in the wafer fab. Antaios did not reveal the identity of the foundry but reference to a 22nm process may indicate an involvement with Globalfoundries in Dresden.

Antaios’ businesss model is to license its technology to foundries and fabless chip companies including the core technology, memory IP blocks and memory compiler tools.

Antaios said in email communication that over the last two years it has been refining its cell architecture and baseline materials and seeking to demonstrate retention and endurance characteristics to enable design wins as non-volatile cache memory close to logic.

By enabling simultaneously high operating speed and infinite read/write endurance, SOT has the potential to replace both embedded non-volatile memory and SRAM cache in microcontrollers, microprocessors and system-on-chip designs.

If SOT-MRAM could be used to replace SRAM in registers, flip-flops, scratch-pad memories very close to and within the logic circuits it could have a major impact on how processors are designed to operate. MRAM already has the advantage of non-volatility and density over SRAM memory cells, which typically use six transistors for implementation, but it needs to demonstrate exceptional endurance cycling to be applicable in logic.

Antaios was founded in 2017 by Jean-Pierre Nozières, CEO. Antaios follows on from Nozières’ previous company eVaderis, which worked on Spin Transfer Torque (STT) MRAM (see MRAM startup eVaderis closes, here comes Antaios). The now defunct eVaderis had a close relationship with Globalfoundries and its 22FDX fully-depleted silicon-on-insulator manufacturing process.

Meanwhile Spin Memory Inc. has ceased operations and is in the process of being liquidated. Spin Memory was founded as Spin Transfer Technologies in 2007. It’s founding investor Allied Minds noted that Spin Memory was being wound up under Californian corporate law and that it is in the process of selling assets and liquidating. The process is expected to be completed in 3Q21.

Related links and articles:

News articles: 

MRAM startup Antaois raises $11 million

MRAM startup eVaderis closes, here comes Antaios 

ARM, Applied send more money to Spin Memory 

ARM, Applied, seek to replace SRAM with MRAM

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