Abstract:
The present invention relates to a semiconductor memory device which applies a temperature-compensated word line voltage to a word line in a data reading operation. In the present invention, disclosed is the semiconductor memory device comprising a memory cell array which includes a plurality of word lines, a plurality of bit lines, and a plurality of nonvolatile memory cells which are connected to the word lines and the bit lines; and a word line voltage applying unit which applies a temperature-compensated read voltage to a selected word line and applies a temperature-compensated pass voltage to an unselected word line in the reading operation.
Abstract:
A non-volatile memory device according to an embodiment of the present invention comprises: a memory cell array including word lines and bit lines; and a control logic which performs a program operation to program memory cells connected to a selected word line by applying a program voltage to the selected word line of the memory cell array, and performs a delete operation to delete the memory cells by applying a delete voltage and a delete verify voltage to the selected word line, wherein the control logic extracts information of the deleted state of the memory cell by applying a read voltage to the selected word line, and controls the level of the delete verify voltage based on the delete state information.
Abstract:
A nonvolatile memory device is provided. The nonvolatile memory device includes a nonvolatile memory chip which includes a static latch and a dynamic latch which receives data from the static latch through a floating node, a device controller which controls the operation of the nonvolatile memory chip, and a refresh controller which controls the refresh operation of the dynamic latch. The dynamic latch includes a storage node, a writing transistor which writes the data of the floating node on the storage node and a reading transistor which reads the data of the storage node. The writing transistor and the reading transistor share the floating node.
Abstract:
PURPOSE: A non-volatile memory device and a memory system including the same reduce erasure disturbance by varying a program pulse period according to temperature change, the physical position of a word line, a program voltage, and/or a program-erasure cycle. CONSTITUTION: A program voltage (Vpgm) is supplied to a selected word line (Selected WL). A pass voltage is supplied to unselected word lines (Unselected WL). A program pulse period where the program voltage is constantly maintained is controlled by temperature change. The program pulse period is increased when the temperature is decreased, and the program pulse period is decreased when the temperature is increased. The program pulse period determined by the temperature change is additionally changed by the physical position of the selected word line.
Abstract:
PURPOSE: A non-volatile memory device and a memory system including the same improve the distribution of a threshold voltage by biasing a bulk to a negative voltage during a programming operation and/or a verification operation. CONSTITUTION: A program execution period is performed to supply a program voltage to a selected word line. A verification period is performed to supply a verification voltage to the selected word line. A negative voltage as a well bias voltage (Vbb) is supplied to a pocket well in which memory cells are formed during the verification period. The negative voltage or a ground voltage as the well bias voltage is supplied to the pocket well during the program execution period.
Abstract:
PURPOSE: A non-volatile memory device, a non-volatile memory system including thereof, a program method thereof, and a controller operation method controlling thereof are provided to perform the program operation by reducing the program disturbance. CONSTITUTION: A flash memory device (1100) comprises a coupling program controlling unit (1165). A first memory cell programs a first data pattern. A second memory cell programs by using the program voltage. By using the verification voltage which corresponds to the first data pattern, the programming of the first data pattern of the first memory cell is verified. If the verification result of the first memory cell is 'pass', the program of the second memory cell is completed.