Operation method of multi-bits read only memory

    公开(公告)号:US11837299B2

    公开(公告)日:2023-12-05

    申请号:US17716122

    申请日:2022-04-08

    申请人: Chen-Feng Chang

    摘要: An operation method of a multi-bits read only memory includes a step of applying a gate voltage to a conductive gate, a first voltage to a first electrode, and a second voltage to a second electrode. The multi-bits read only memory of the present invention includes a substrate and a transistor structure with the conductive gate mounted between the first electrode and the second electrode, a first oxide located between the first electrode and the conductive gate, and a second oxide located between the second electrode and the conductive gate. The present invention creates an initial state wherein the transistor structure is not conducting, an intermediate state wherein the first oxide is punched through by the first voltage, and a fully opened state wherein both the first oxide and the second oxide are punched through. The aforementioned states allow storage of multiple bits on the read only memory.

    Contact layer traces to program programmable ROM

    公开(公告)号:US11676675B2

    公开(公告)日:2023-06-13

    申请号:US17848487

    申请日:2022-06-24

    发明人: Ayaskanta Behera

    IPC分类号: G11C17/12 H01L27/112

    CPC分类号: G11C17/12 H01L27/112

    摘要: A device includes a programmable ROM circuit, an address circuit, and a processor. The programmable ROM circuit includes multiple physically contiguous pairs of bit-cells, each pair of bit-cells includes an active layer trace extending continuously across both of the bit-cells, each pair of bit-cells comprises a shared contact layer point when the pair of bit-cells is programmed to a value of one and no shared contact layer point when the pair of bit-cells is programmed to a value of zero. The address circuit is coupled to the programmable ROM circuit and configured to address only a first bit-cell of each pair of bit-cells. The processor is coupled to the address circuit and the programmable ROM circuit and configured to use the address circuit to read data from one or more pairs of bit-cells of the programmable ROM circuit.

    OPERATION METHOD OF MULTI-BITS READ ONLY MEMORY

    公开(公告)号:US20220343986A1

    公开(公告)日:2022-10-27

    申请号:US17722534

    申请日:2022-04-18

    申请人: Chen-Feng CHANG

    摘要: An operation method of a multi-bits read only memory includes a step of applying a gate voltage to a conductive gate, a first voltage to a first electrode, and a second voltage to a second electrode. The multi-bits read only memory of the present invention includes a substrate and a transistor structure with the conductive gate mounted between the first electrode and the second electrode. A multiplicity of M nanowire channels is mounted between the first electrode and the second electrode, and M is a positive integer greater than one. The present invention breaks multiple states of the multi-bits read only memory. The multiple states are programmable and include an ith state, and 1

    DIFFERENTIAL READ-ONLY MEMORY (ROM) DEVICE
    10.
    发明申请

    公开(公告)号:US20190237113A1

    公开(公告)日:2019-08-01

    申请号:US15994264

    申请日:2018-05-31

    摘要: A read-only memory (ROM) device includes a memory cell that is electrically coupled to a bitline (BL) or to a BL which represents a complement of the BL. The ROM device precharges the BL and the BL to a first logical value. The ROM device activates the memory cell which discharges the BL when the memory cell is coupled to the BL or discharges the BL when the memory cell is coupled to the BL. The ROM device reads the first logical value as being stored within the memory cell when the BL is less than the BL. Otherwise, the ROM device reads the second logical value as being stored within the memory cell when the BL is greater than the BL.