Compute near memory with backend memory

    公开(公告)号:US11251186B2

    公开(公告)日:2022-02-15

    申请号:US16827542

    申请日:2020-03-23

    Abstract: Examples herein relate to a memory device comprising an eDRAM memory cell, the eDRAM memory cell can include a write circuit formed at least partially over a storage cell and a read circuit formed at least partially under the storage cell; a compute near memory device bonded to the memory device; a processor; and an interface from the memory device to the processor. In some examples, circuitry is included to provide an output of the memory device to emulate output read rate of an SRAM memory device comprises one or more of: a controller, a multiplexer, or a register. Bonding of a surface of the memory device can be made to a compute near memory device or other circuitry. In some examples, a layer with read circuitry can be bonded to a layer with storage cells. Any layers can be bonded together using techniques described herein.

    MULTI-LEVEL MAGNETIC TUNNEL JUNCTION (MTJ) DEVICES

    公开(公告)号:US20200005861A1

    公开(公告)日:2020-01-02

    申请号:US16022547

    申请日:2018-06-28

    Abstract: A MTJ device includes a free (storage) magnet and fixed (reference) magnet between first and second electrodes, and a programmable booster between the free magnet and one of the electrodes. The booster comprises a magnetic material layer. The booster may further comprise an interface layer that supports the formation of a skyrmion spin texture, or a stable ferromagnetic domain, within the magnetic material layer. A programming current between two circuit nodes may be employed to set a position of the skyrmion or magnetic domain within the magnetic material layer to be more proximal to, or more distal from, the free magnet. The position of the skyrmion or magnetic domain to the MTJ may modulate TMR ratio of the MTJ device. The TMR ratio modulation may be employed to discern more than two states of the MTJ device. Such a multi-level device may, for example, be employed to store 2 bits/cell.

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