摘要:
A power-on detector supplied with a power supply voltage from an external source and detects a variation of the power supply voltage. The operating method of the power-on detector comprises calculating the slope of the rise of power supply voltage from a first voltage to a second voltage higher than the first voltage; and calculating the expected time for the power supply voltage to reach a target voltage level, based on the calculated slope.
摘要:
A power-on detector supplied with a power supply voltage from an external source and detects a variation of the power supply voltage. The operating method of the power-on detector comprises calculating the slope of the rise of power supply voltage from a first voltage to a second voltage higher than the first voltage; and calculating the expected time for the power supply voltage to reach a target voltage level, based on the calculated slope.
摘要:
A method, device and system are provided for programming a flash memory device, the method including executing a bit line setup operation, and executing a channel pre-charge operation simultaneously with the bit line setup operation, the channel pre-charge operation including applying a channel pre-charge voltage to all word lines; and the device including a voltage generator disposed for providing each of a program voltage, a read voltage, a pass voltage, and a channel pre-charge voltage, a high-voltage switch connected to the voltage generator and disposed for switchably providing one of the program voltage, read voltage, pass voltage, or channel pre-charge voltage, and control logic connected to the high-voltage switch and disposed for simultaneously executing a bit line setup operation and a channel pre-charge operation, the channel pre-charge operation comprising controlling the high-voltage switch to apply the channel pre-charge voltage to both selected and unselected word lines of the device.
摘要:
A non-volatile memory device includes a cell array including a plurality of memory cells, a page buffer block controlling bitlines of the plurality of memory cells to program the memory cells to a first target state or a second target state, and a control logic configured to skip a verify operation for the memory cells programmed to the first target state and perform a verify operation for the memory cells programmed to the second target state during a second program loop when the memory cells programmed to the first target state are determined to be in a pass condition during a first program loop.
摘要:
One embodiment of the method includes determining a type of cells in a block of the flash memory if an error is detected in at least a portion of the block, and selectively changing one of a cell type indicator and a bad block indicator associated with the block based on the determined type of cells in the block. The cell type indicator indicates a type of the cells in the associated block, and the bad block indicator indicates whether the associated block is a usable block.
摘要:
A nonvolatile memory device is operated by programming sample data in the memory device for verification using verify voltage levels derived from an ideal verify voltage Vv associated with a particular temperature range, performing read verify operations on the sample data using the verify voltage Vv associated with the temperature range; and determining a temperature compensation parameter Nc based on results of the read verify operations.
摘要:
A semiconductor memory device including a flash memory that includes a page, wherein the page includes a plurality of memory cells connected to even bitlines and odd bitlines of the flash memory, and the memory cells are disposed in a plurality of sectors. The semiconductor memory device also includes a memory controller configured to provide the flash memory with a read address that identifies sectors to be read. The flash memory is configured to determine a sequence of even sensing and odd sensing based on the read address and perform the even sensing and the odd sensing according to the determined sequence. In addition, the flash memory is configured to sense data of at least one identified sector that includes memory cells connected to the even bitlines during the even sensing and sense data of at least one identified sector that includes memory cells connected to the odd bitlines during the odd sensing.
摘要:
A method, device and system are provided for programming a flash memory device, the method including executing a bit line setup operation, and executing a channel pre-charge operation simultaneously with the bit line setup operation, the channel pre-charge operation including applying a channel pre-charge voltage to all word lines; and the device including a voltage generator disposed for providing each of a program voltage, a read voltage, a pass voltage, and a channel pre-charge voltage, a high-voltage switch connected to the voltage generator and disposed for switchably providing one of the program voltage, read voltage, pass voltage, or channel pre-charge voltage, and control logic connected to the high-voltage switch and disposed for simultaneously executing a bit line setup operation and a channel pre-charge operation, the channel pre-charge operation comprising controlling the high-voltage switch to apply the channel pre-charge voltage to both selected and unselected word lines of the device.
摘要:
A nonvolatile memory device includes a memory cell array; a voltage generator configured to provide stepwise increasing step pulses for varying logic states of memory cells in the memory cell array; and control logic configured to adjust an initial voltage of the stepwise increasing step pulses according to the number of the stepwise increasing step pulses.
摘要:
A nonvolatile memory device includes a memory cell array; a voltage generator configured to provide stepwise increasing step pulses for varying logic states of memory cells in the memory cell array; and control logic configured to adjust an initial voltage of the stepwise increasing step pulses according to the number of the stepwise increasing step pulses.