摘要:
A method to eliminate program deceleration and to enhance the resistance to program disturbance of a non-volatile floating gate memory cell is disclosed. This method eliminates or minimizes the impact of the hole displacement current. This can be done, for example, by increasing the rise time of the high programming voltage applied to the high voltage terminal. Alternatively, the transistor of the non-volatile floating gate memory cell can be turned off until the voltage applied to the high voltage terminal has reached the programming voltage. This can be done, for example by delaying the voltage applied to either the low voltage terminal or to the control gate to turn on the transistor until the voltage at the high voltage terminal has past the ramp up voltage and has reached a level programming voltage.
摘要:
A method to eliminate program deceleration and to enhance the resistance to program disturbance of a non-volatile floating gate memory cell is disclosed. This method eliminates or minimizes the impact of the hole displacement current. This can be done, for example, by increasing the rise time of the high programming voltage applied to the high voltage terminal. Alternatively, the transistor of the non-volatile floating gate memory cell can be turned off until the voltage applied to the high voltage terminal has reached the programming voltage. This can be done, for example by delaying the voltage applied to either the low voltage terminal or to the control gate to turn on the transistor until the voltage at the high voltage terminal has past the ramp up voltage and has reached a level programming voltage.
摘要:
A semiconductor metal-oxide-semiconductor field effect transistor (MOSFET) transistor with increased on-state current obtained through intrinsic bipolar junction transistor (BJT) of MOSFET has been described. Methods of operating the MOS transistor are provided.
摘要:
Semiconductor memory is provided wherein a memory cell includes a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to the cell. The cell further includes a nonvolatile memory comprising a resistance change element configured to store data stored in the floating body under any one of a plurality of predetermined conditions. A method of operating semiconductor memory to function as volatile memory, while having the ability to retain stored data when power is discontinued to the semiconductor memory is described.
摘要:
Multi-port semiconductor memory cells including a common floating body region configured to be charged to a level indicative of a memory state of the memory cell. The multi-port semiconductor memory cells include a plurality of gates and conductive regions interfacing with said floating body region. Arrays of memory cells and method of operating said memory arrays are disclosed for making a memory device.
摘要:
A semiconductor memory cell and arrays of memory cells are provided In at least one embodiment, a memory cell includes a substrate having a top surface, the substrate having a first conductivity type selected from a p-type conductivity type and an n-type conductivity type; a first region having a second conductivity type selected from the p-type and n-type conductivity types, the second conductivity type being different from the first conductivity type, the first region being formed in the substrate and exposed at the top surface; a second region having the second conductivity type, the second region being formed in the substrate, spaced apart from the first region and exposed at the top surface; a buried layer in the substrate below the first and second regions, spaced apart from the first and second regions and having the second conductivity type; a body region formed between the first and second regions and the buried layer, the body region having the first conductivity type; a gate positioned between the first and second regions and above the top surface; and a nonvolatile memory configured to store data upon transfer from the body region.
摘要:
Methods of maintaining a state of a memory cell without interrupting access to the memory cell are provided, including applying a back bias to the cell to offset charge leakage out of a floating body of the cell, wherein a charge level of the floating body indicates a state of the memory cell; and accessing the cell.
摘要:
Methods of maintaining a state of a memory cell without interrupting access to the memory cell are provided, including applying a back bias to the cell to offset charge leakage out of a floating body of the cell, wherein a charge level of the floating body indicates a state of the memory cell; and accessing the cell.
摘要:
Semiconductor memory having both volatile and non-volatile modes and methods of operation. A semiconductor memory cell includes a substrate having a first conductivity type; a first region embedded in the substrate at a first location of the substrate and having a second conductivity type; a second region embedded in the substrate at a second location the substrate and have the second conductivity type, such that at least a portion of the substrate having the first conductivity type is located between the first and second locations and functions as a floating body to store data in volatile memory; a floating gate or trapping layer positioned in between the first and second locations and above a surface of the substrate and insulated from the surface by an insulating layer; the floating gate or trapping layer being configured to receive transfer of data stored by the volatile memory and store the data as nonvolatile memory in the floating gate or trapping layer upon interruption of power to the memory cell; and a control gate positioned above the floating gate or trapping layer and a second insulating layer between the floating gate or trapping layer and the control gate.
摘要:
A semiconductor memory cell, semiconductor memory devices comprising a plurality of the semiconductor memory cells, and methods of using the semiconductor memory cell and devices are described. A semiconductor memory cell includes a substrate having a first conductivity type; a first region embedded in the substrate at a first location of the substrate and having a second conductivity type; a second region embedded in the substrate at a second location of the substrate and have the second conductivity type, such that at least a portion of the substrate having the first conductivity type is located between the first and second locations and functions as a floating body to store data in volatile memory; a trapping layer positioned in between the first and second locations and above a surface of the substrate; the trapping layer comprising first and second storage locations being configured to store data as nonvolatile memory independently of one another; and a control gate positioned above the trapping layer.