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    3.
    发明专利
    未知

    公开(公告)号：DE60041199D1

    公开(公告)日：2009-02-05

    申请号：DE60041199

    申请日：2000-12-29

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PASOTTI MARCO ,  DE SANDRE GUIDO ,  GUAITINI GIOVANNI ,  IEZZI DAVID ,  POLES MARCO ,  ROLANDI PIERLUIGI

    IPC: G11C16/10 ,  G11C16/04 ,  G11C16/28 ,  G11C16/34

    Abstract: Described herein is a method for storing a datum in a first and a second memory cells of a nonvolatile memory. The storage method envisages programming the first and second memory cells in a differential way, by setting a first threshold voltage in the first memory cell and a second threshold voltage different from the first threshold voltage in the second memory cell, the difference between the threshold voltages of the two memory cells representing a datum stored in the memory cells themselves.

    4.
    发明专利
    未知

    公开(公告)号：DE69723814D1

    公开(公告)日：2003-09-04

    申请号：DE69723814

    申请日：1997-05-09

    Applicant: ST MICROELECTRONICS SRL

    Inventor： ROLANDI PIERLUIGI ,  CANEGALLO ROBERTO ,  CHIOFFI ERNESTINA ,  GERNA DANILO ,  PASOTTI MARCO

    IPC: G11C27/00

    Abstract: For each cell (1) to be programmed, the present threshold value (Vo) of the cell is determined; the desired threshold value (VTAR) is acquired; the analog distance between the present threshold value and the desired threshold value is calculated; and a programming pulse (S) is then generated, the duration of which is proportional to the analog distance calculated. The programming and reading cycle is repeated until the desired threshold is reached. By this means a time saving is obtained, owing to the reduction of the number of intermediate reading steps. The method permits programming in parallel and simultaneously of a plurality of cells (1) of a memory array (2) which is connected to a single word line (51) and to different bit lines (41 - 4N), each with a programming pulse (S1 - SN) the duration of which is proportional to the analog distance calculated for the same cell. The programming process is thus very fast, owing to parallel application of the programming and the saving in the intermediate reading cycles.

    6.
    发明专利
    未知

    公开(公告)号：ITRM20010525A1

    公开(公告)日：2003-02-28

    申请号：ITRM20010525

    申请日：2001-08-30

    Applicant: ST MICROELECTRONICS SRL

    Inventor： GUAITINI GIOVANNI ,  PASOTTI MARCO ,  DE SANDRE GUIDO ,  IEZZI DAVID ,  POLES MARCO ,  ROLANDI PIERLUIGI

    IPC: G11C16/08 ,  G11C16/16

    Abstract: A non-volatile semiconductor memory device including an output connected to a row line and two supply terminals. Each elementary stage has an upper branch with a p-channel MOS transistor and a lower branch with an n-channel MOS transistor. In order to permit the memory to be erased line by line without having to use components capable of withstanding high voltages, each elementary stage has two supplementary MOS transistors, namely an n-channel transistor in the upper branch and a p-channel transistor in the lower branch. In this way it becomes possible to bias the elementary stages in such a manner the in the reading and programming phases the upper branch will function as pull-up and the lower branch as pull-down, while in the erasure phase the upper branch functions as pull-down and the lower branch as pull-up.

    9.
    发明专利
    未知

    公开(公告)号：DE60117676T2

    公开(公告)日：2006-11-16

    申请号：DE60117676

    申请日：2001-12-27

    Applicant: ST MICROELECTRONICS SRL

    Inventor： NAVONI LORIS GIUSEPPE ,  BORGATTI MICHELE ,  CALI LORENZO ,  ROLANDI PIERLUIGI

    IPC: G06F9/445 ,  G06F8/61

    Abstract: The invention relates to a method of expanding the functional capabilities of portable electronic devices with user friendly modes, wherein a host device is associated a quick-connect function-expanding module. In this method, at each installation of a given module, the functional expansion module and the host device recognize each other; on first installation of a given module in the host device, a series of checking operations are carried out automatically; the user can select to activate the available expansion; and once a given application is selected, the configuration and functions required for each application are stored.

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