Phase-change Memory Persists At Vlsi Symposium

Intel’s phase-change memory business, called Optane, made a loss of $576 million on sales of $392 million in 2020. At the upcoming 2023 Symposium on VLSI Technology and Circuits, SK Hynix researchers are due to present a cross-point memory based on a 20nm 1S1M storage-class memory unit cell in a four-deck 256Gbit memory. Additionally, a team drawn from SK Hynix and the Postech research institute are due to report the use of atomic layer deposition (ALD) to make an InTe binary ovonic threshold switch (OTS) and its combination with an HfOx buffer. Lastly, authors from STMicroelectronics are presenting a paper on a new phase-change memory architecture.