Patents Assigned to Chip.Memory Technology, Inc.
  • Patent number: 8489843
    Abstract: A method includes forming a memory device through providing an array of non-volatile memory cells including one or more non-volatile memory cell(s) and an array of volatile memory cells including one or more volatile memory cell(s) on a substrate. The method also includes appropriately programming an address translation logic associated with the memory device through a set of registers associated therewith to enable configurable mapping of an address associated with a sector of the memory device to any memory address space location in a computing system associated with the memory device. The address translation logic is configured to enable translation of an external virtual address associated with the sector of the memory device to a physical address associated therewith.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: July 16, 2013
    Assignee: Chip Memory Technology, Inc.
    Inventor: Wingyu Leung
  • Patent number: 8391078
    Abstract: A non-volatile DRAM cell includes a pass-gate transistor and a cell capacitor. A read operation of the non-volatile cell begins by positively charging the cell capacitor. A cell capacitor of an associated dummy non-volatile DRAM cell is fully charged. The pass-gate transistor is activated and if the pass-gate transistor is erased it does not turn on and if it is programmed, it turns on. Charge is shared on the complementary pair of pre-charged bit lines connected to the non-volatile DRAM cell and its associated Dummy non-volatile DRAM cell. A sense amplifier detects the difference in the data state stored in the pass-gate transistor. The program and erase of the non-volatile DRAM cell is accomplished Gate-induced drain-lowering (GIDL) assisted band-to-band tunneling and Fowler-Nordheim tunneling respectively. Programming or erasing a selected row of cells does not affect the data states of the cells in the unselected rows.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: March 5, 2013
    Assignee: Chip Memory Technology, Inc.
    Inventor: Wingyu Leung
  • Patent number: 8320190
    Abstract: A non-volatile DRAM cell includes a pass-gate transistor and a cell capacitor. A read operation of the non-volatile cell begins by negatively charging the cell capacitor. A cell capacitor of an associated dummy non-volatile DRAM cell is fully discharged. The pass-gate transistor is activated and if the pass-gate transistor is programmed it does not turn on and if it is erased, it turns on. Charge is shared on the complementary pair of precharged bit lines connected to the non-volatile DRAM cell and its associated Dummy non-volatile DRAM cell. A sense amplifier detects the difference in the data state stored in the pass-gate transistor. The program and erase of the non-volatile DRAM cell is accomplished by charge injection from the associated bit line of the non-volatile DRAM cell.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: November 27, 2012
    Assignee: Chip Memory Technology, Inc.
    Inventor: Wingyu Lueng
  • Patent number: 8228726
    Abstract: A system and method of an electrically programmable and erasable non-volatile memory cell fabricated using a single-poly, logic process with the addition of ONO deposition and etching is disclosed. In one embodiment, a non-volatile memory system includes at least one non-volatile memory cell consists of a SONOS transistor fabricated on a P substrate, with a deep N-well located in the P substrate, with a P-well located in the deep N-well. The memory cell further includes an access NMOS transistor, coupled to the SONOS transistor and located in the same P-well that includes an oxide only gate-dielectric. The cell can be fabricated in a modified logic process with other transistors and with their physical characteristics preserved.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: July 24, 2012
    Assignee: Chip Memory Technology, Inc.
    Inventors: Gang-Feng Fang, Wingyu Leung
  • Patent number: 8059471
    Abstract: A non-volatile DRAM cell includes a pass-gate transistor and a cell capacitor. A read operation of the non-volatile cell begins by negatively charging the cell capacitor. A cell capacitor of an associated dummy non-volatile DRAM cell is fully discharged. The pass-gate transistor is activated and if the pass-gate transistor is programmed it does not turn on and if it is erased, it turns on. Charge is shared on the complementary pair of precharged bit lines connected to the non-volatile DRAM cell and its associated Dummy non-volatile DRAM cell. A sense amplifier detects the difference in the data state stored in the pass-gate transistor. The program and erase of the non-volatile DRAM cell is accomplished by charge injection from the associated bit line of the non-volatile DRAM cell.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 15, 2011
    Assignee: Chip Memory Technology Inc.
    Inventor: Wingyu Lueng
  • Publication number: 20110258364
    Abstract: A method includes forming a memory device through providing an array of non-volatile memory cells including one or more non-volatile memory cell(s) and an array of volatile memory cells including one or more volatile memory cell(s) on a substrate. The method also includes appropriately programming an address translation logic associated with the memory device through a set of registers associated therewith to enable configurable mapping of an address associated with a sector of the memory device to any memory address space location in a computing system associated with the memory device. The address translation logic is configured to enable translation of an external virtual address associated with the sector of the memory device to a physical address associated therewith.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 20, 2011
    Applicant: CHIP MEMORY TECHNOLOGY, INC.,
    Inventor: Wingyu Leung
  • Patent number: 7983081
    Abstract: An apparatus and method of an electrically programmable and erasable non-volatile memory cell with a deep N-well to isolate the memory cell from the substrate is disclosed. In one embodiment, a non-volatile memory apparatus includes at least one non-volatile memory cell fabricated on a P substrate, with a deep N-well located in the P substrate, while a P-well and an N-well are located in the deep N-well. The memory cell further includes a PMOS transistor located in the N-well, in which the PMOS transistor includes a PMOS gate-oxide, and an NMOS capacitor located in the P-well. The NMOS capacitor includes an N+ coupling region located in the P-well, and an NMOS gate-oxide. The memory cell further includes a floating gate comprised of a poly-silicon gate overlying the PMOS transistor and the NMOS capacitor.
    Type: Grant
    Filed: December 14, 2008
    Date of Patent: July 19, 2011
    Assignee: Chip.Memory Technology, Inc.
    Inventors: Gang-Feng Fang, Wingyu Leung
  • Publication number: 20110032766
    Abstract: A system and method of an electrically programmable and erasable non-volatile memory cell fabricated using a single-poly, logic process with the addition of ONO deposition and etching is disclosed. In one embodiment, a non-volatile memory system includes at least one non-volatile memory cell consists of a SONOS transistor fabricated on a P substrate, with a deep N-well located in the P substrate, with a P-well located in the deep N-well. The memory cell further includes an access NMOS transistor, coupled to the SONOS transistor and located in the same P-well that includes an oxide only gate-dielectric. The cell can be fabricated in a modified logic process with other transistors and with their physical characteristics preserved.
    Type: Application
    Filed: October 18, 2010
    Publication date: February 10, 2011
    Applicant: Chip Memory Technology, Inc.
    Inventors: GANG-FENG FANG, Wingyu Leung