摘要:
A lock-out circuit is adapted to selectively perform a lock-out function in an integrated circuit device. The lock-out function cuts off the supply of an operating voltage to the integrated circuit device whenever a power supply voltage for the device falls below a predetermined detection voltage. However, the lock-out function is disabled whenever the integrated circuit device performs an operation requiring a power supply voltage lower than the predetermined detection voltage.
摘要:
A lock-out circuit is adapted to selectively perform a lock-out function in an integrated circuit device. The lock-out function cuts off the supply of an operating voltage to the integrated circuit device whenever a power supply voltage for the device falls below a predetermined detection voltage. However, the lock-out function is disabled whenever the integrated circuit device performs an operation requiring a power supply voltage lower than the predetermined detection voltage.
摘要:
A vertical memory device includes a plurality of gate electrodes at a plurality of levels, respectively, spaced apart from each other in a vertical direction substantially perpendicular to a top surface of a substrate, a channel extending in the vertical direction on the substrate and penetrating through the gate electrodes, and a plurality of contact plugs extending in the vertical direction and contacting the gate electrodes, respectively. At least one second contact plug is formed on a first gate electrode among the plurality of gate electrodes, and extends in the vertical direction.
摘要:
A method of operating a memory device includes; applying a pre-write voltage to a selected memory cell by applying a first voltage to a first signal line connected to the selected memory cell and a second voltage to a second signal line connected to the selected memory cell during a first set writing interval, wherein a level of the first voltage is higher than a level of the second voltage, and thereafter, applying a write voltage to the selected memory cell by applying a third voltage having a level lower than the level of the first voltage and higher than the level of the second voltage to the first signal line during a second set writing interval.
摘要:
A method of operating a flash memory device includes a first operating mode and a second operating mode having different operating speeds. Each one of the first and second operating modes includes a bit line set-up interval and at least one additional interval. The flash memory is divided into first and second mats connected to respective first and second R/W circuits. During the bit line set-up interval of the second operating mode, the flash memory controls operation of both the first and second R/W circuits in a time division approach to stagger respective peak current intervals for the first and second mats.
摘要:
A flash memory and a program method of the flash memory include applying a pass voltage to word lines to boost a channel voltage, which is discharged to a ground voltage. A program voltage is applied to a selected word line and a local voltage is applied to at least one word line supplied with the pass voltage while the program voltage is being applied to the selected word line. The local voltage is lower than the pass voltage and equal to or higher than the ground voltage. The boosted channel voltage may be discharged before the program voltage is applied to the selected word line.
摘要:
A method of programming a nonvolatile memory device including a plurality of memory cells includes providing a plurality of program loops having a corresponding plurality of program voltages associated therewith. A first one of the plurality of program loops is activated to generate a first program voltage to program a first one of the plurality of memory cells. A second one of the plurality of program loops is activated to generate a second program voltage to program a second one of the plurality of memory cells.
摘要:
An internal voltage of a semiconductor memory device is controlled, where the internal voltage is set according to a reference voltage. The reference voltage is controlled according to first control data to increase the internal voltage to be higher than a target voltage in a power-up operation, and second control data is read. The reference voltage is then controlled according to the second control data to decrease the internal voltage to the target voltage.
摘要:
A semiconductor memory device comprises a first pump clock generator configured to generate a first pump clock signal based on a first power supply voltage. The device also comprises a first charge pump configured to generate a first pump output voltage in response to the first pump clock signal. The device also comprises a second pump clock generator configured to generate a second pump clock signal based on the first pump output voltage. The device also comprises a second charge pump configured to generate a second pump output voltage in response to the second pump clock signal. The device also comprises a third pump clock generator configured to generate a third pump clock signal based on the first power supply voltage. The device also comprises a third charge pump configured to generate a third pump output voltage in response to the third pump clock signal.
摘要:
A flash memory device is programmed by loading first data into a page buffer of a first mat. Second data is loaded into a page buffer of a second mat while programming the first data in a first memory block of the first mat.